What happened on August 21?

40 sourced historical events are currently published for August 21. Browse the chronology below or filter this date by place and event type. This collection is expanding, not an exhaustive account of the day.

Explore this date

The published August 21 chronology runs from 1238 to 2025, a span of 787 years. It contains 40 sourced records across 21 countries and 5 event categories. These figures describe the current collection, not all events that occurred on this date.

Start at the earliest published record or jump to the latest. The counts below show where this collection is concentrated.

Most represented topics

  • War & conflict · 19 records
  • Politics & society · 7 records
  • Sport · 7 records
  • Arts & culture · 6 records

Most represented countries

  • United States · 12 records
  • Mexico · 3 records
  • Portugal · 3 records
  • Australia · 2 records
  • France · 2 records

Compare events across time

These pairs share a category and calendar date; the pairing does not imply a historical connection.

Some events have more than one location, so country counts can overlap. Read about coverage and source limits.

August 21 historical events

1238 — Battle of Örlygsstaðir

The Battle of Örlygsstaðir was a historic battle fought by the Sturlungar against the Ásbirningar and the Haukdælir clans in northern Iceland. The battle was part of the civil war that was taking place in Iceland at the time between various powerful clans during the time known as the Age of the Sturlungs. The Battle of Örlygsstaðir was fought on 21 August 1238 between Sighvatur Sturluson (brother of Snorri Sturluson) and his son Sturla Sighvatsson on the one hand, and Kolbeinn ungi and Gissur Þorvaldsson (later Earl Gissur) on the other. Sighvatur had nearly 500 men but there no evidence available of the size of Sturla's following.

Iceland · War & conflict · Checked 2026-09-23

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1689 — Battle of Dunkeld

The Battle of Dunkeld (Scottish Gaelic: Blàr Dhùn Chaillinn) was fought between Jacobite clans supporting the deposed king James VII of Scotland and a government regiment of covenanters supporting William of Orange, King of Scotland, in the streets around Dunkeld Cathedral, Dunkeld, Scotland, on 21 August 1689 and formed part of the Jacobite rising commonly called Dundee's rising in Scotland. The battlefield is currently under research to be inventoried and protected by Historic Scotland under the Scottish Historical Environment Policy of 2009.

Dunkeld, United Kingdom · War & conflict · Checked 2026-09-23

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1707 — Siege of Toulon (1707)

The siege of Toulon took place between 29 July and 21 August 1707 during the War of the Spanish Succession, when a combined Savoyard-Imperial army supported by a British naval force, attacked the French base at Toulon. The Allies had insufficient men to institute a formal siege, while they were outnumbered by French land forces; after losing around 13,000 men, mostly from disease, they retreated to Piedmont.

Toulon, France · War & conflict · Checked 2026-09-23

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1762 — Battle of Makwanpur (1762)

Battle of Makwanpur was fought on 21 August 1762 in Makwanpurgadhi, Nepal between the Gorkha Kingdom and the Kingdom of Makwanpur. The battle lasted for about eight hours and resulted in Gorkhali victory. 60 Gorkhali and 400 Makwanpur soldiers were killed in the battle.

Nepal · War & conflict · Checked 2026-09-23

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1808 — Battle of Vimeiro

In the Battle of Vimeiro (21 August 1808) the British under General Arthur Wellesley (later known as the Duke of Wellington) defeated the French under Major-General Jean-Andoche Junot near the village of Vimeiro (Portuguese pronunciation: [viˈmɐjɾu]), near Lisbon, Portugal during the Peninsular War. This battle put an end to the first French invasion of Portugal. Four days after the Battle of Roliça, Wellesley's army was attacked by a French army under General Junot near the village of Vimeiro. The battle began as a battle of manoeuvre, with French troops attempting to outflank the British left, but Wellesley was able to redeploy his army to face the assault.

Portugal · War & conflict · Checked 2026-09-23

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1823 — Battle of Karpenisi

The Battle of Karpenisi took place near the town of Karpenisi (in Evrytania, central Greece) on the night of 21 August 1823, between units of the Greek revolutionary army and Ottoman troops.

Greece · War & conflict · Checked 2026-09-23

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1863 — Skirmish near Brooklyn, Kansas

The skirmish near Brooklyn, Kansas was a skirmish of the American Civil War on August 21, 1863, between Quantrill's Raiders and pursuing Union forces immediately after the Lawrence massacre. James Henry Lane led a small group of survivors of the massacre in pursuit of Quantrill's men, and were joined by a force of about 200 Union Army cavalrymen, commanded by Major Preston B. Plumb.

Kansas, United States · War & conflict · Checked 2026-09-23

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1864 — Battle of Summit Point

The Battle of Summit Point, also known as Flowing Springs or Cameron's Depot, was an inconclusive battle of the American Civil War fought on August 21, 1864, near Summit Point, West Virginia. The battle was part of Union Maj. Gen. Philip Sheridan's Shenandoah Valley Campaign, which took place between August and December 1864. While Sheridan concentrated his army near Charles Town, Confederate Lt. Gen. Jubal A. Early and Maj. Gen. Richard H. Anderson attacked the Union forces with converging columns on August 21. Anderson struck north against the Union cavalry at Summit Point.

West Virginia, United States · War & conflict · Checked 2026-09-23

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1864 — Second Battle of Memphis

The Second Battle of Memphis was a battle of the American Civil War occurring on August 21, 1864, in Shelby County, Tennessee.At 4:00 a.m. on August 21, 1864, Maj. Gen. Nathan Bedford Forrest made a daring raid on Union-held Memphis, Tennessee, but it was not an attempt to capture the city, which was occupied by 6,000 Federal troops. The raid had three objectives: to capture three Union generals posted there; to release Southern prisoners from Irving Block Prison; and to cause the recall of Union forces from Northern Mississippi. Striking northwestward for Memphis with 2,000 cavalry, Forrest lost about a quarter of his strength because of exhausted horses.

Tennessee, United States · War & conflict · Checked 2026-09-23

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1881 — Spanish general election, 1881

General elections to the Cortes Generales were held in Spain on 21 August 1881. At stake were all 392 seats in the Congress of Deputies. Though formally competitive, the 1881 general election was held under the recently developed system of Turno Pacifico; in accordance with a semi-formal power-sharing arrangement brokered by Antonio Cánovas del Castillo, elections (under influence by machine bosses called caciques) served as a rubber stamp for a routine handover of power initiated by the King. The 1881 election, as expected, sanctioned the pre-arranged handover from the Conservatives to the Liberals.

Spain · Politics & society · Checked 2026-09-23

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1881 — Portuguese legislative election, 1881

Parliamentary elections were held in Portugal on 21 August 1881. The result was a landslide victory for the Regeneration Party, which won 122 seats.

Portugal · Politics & society · Checked 2026-09-23

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1914 — Battle of Charleroi

The Battle of Charleroi (French: Bataille de Charleroi), or the Battle of the Sambre, was fought on 21 August 1914, by the French Fifth Army and the German 2nd and 3rd armies, during the Battle of the Frontiers. The French were planning an attack across the Sambre River, when the Germans attacked first, forced back the French from the river and nearly cut off the French retreat by crossing the Meuse around Dinant and getting behind the French right flank. The French were saved by a counter-attack at Dinant and the re-direction of the 3rd Army to the north-west in support of the 2nd Army, rather than south-west.

Belgium · War & conflict · Checked 2026-09-23

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1914 — Battle of Lai

The Battle of Laï began on 21 August 1914 in Chad, during the First World War at the village of Laï, capital of the district of Logone, on the Logone River in the south. A German column from Kamerun, led by Captain Von Duhring, attacked the village of Laï, defended by Captain Jeanjean. After a bitter fight, the French were driven out and the village was occupied by the Germans until 1 September 1914.

Chad · War & conflict · Checked 2026-09-23

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1920 — Battle of Przasnysz

The Battle of Przasnysz took place on August 21, 1920, near the towns of Przasnysz and Ciechanow, during the Polish-Soviet War. Polish forces of Lida Rifle Regiment and 202. Infantry Regiment clashed with elements of Red Army’s 16th and 23rd Infantry Divisions. After the victorious battle of the Wkra river, units of Polish 5th Army (General Wladyslaw Sikorski), began their assault towards Przasnysz and Mlawa (August 18). Soviet 4th Army, which at that time occupied positions along the lower Vistula river, found itself in a difficult situation. As a result, on August 20 General Mikhail Tukhachevsky ordered his troops to concentrate in the area Ciechanow - Przasnysz - Makow Mazowiecki.

Przasnysz, Poland · War & conflict · Checked 2026-09-23

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1932 — 1st Venice International Film Festival

The 1st annual Venice International Film Festival was held between 6 and 21 August 1932. Dr. Jekyll and Mr. Hyde was the first film to be screened at the festival. No official prizes were awarded, so an audience referendum took place to determine the winners.

Venice, Italy · Arts & culture · Checked 2026-09-23

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1942 — Battle of the Tenaru

The Battle of the Tenaru, sometimes called the Battle of the Ilu River or the Battle of Alligator Creek, was a land battle between the Imperial Japanese Army and Allied ground forces that took place on August 21, 1942 on the island of Guadalcanal during the Pacific campaign of World War II. The battle was the first major Japanese land offensive during the Guadalcanal campaign. In the battle, U.S. Marines, under the overall command of U.S. Major General Alexander Vandegrift, repulsed an assault by the "First Element" of the "Ichiki" Regiment, under the command of Japanese Colonel Kiyonao Ichiki.

Solomon Islands · War & conflict · Checked 2026-09-23

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1943 — Australian federal election, 1943

Federal elections were held in Australia on 21 August 1943. All 74 seats in the House of Representatives, and 19 of the 36 seats in the Senate were up for election. The incumbent Australian Labor Party led by Prime Minister of Australia John Curtin defeated the opposition Country Party led by Arthur Fadden and coalition partner the United Australia Party led by Billy Hughes. Although the UAP was the nominal senior partner in the Coalition and had been in government since 1931, it found itself bereft of leadership following the forced resignation of its leader, Robert Menzies.

Australia · Politics & society · Checked 2026-09-23

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1950 — Battle of the Bowling Alley

In the Battle of the Bowling Alley (August 21, 1950), United Nations Command (UN) forces defeated North Korean forces early in the Korean War near the city of Daegu, South Korea. The battle took place in a narrow valley, dubbed the "Bowling Alley", which was north of Daegu.

South Korea · War & conflict · Checked 2026-09-23

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1968 — Occupation of Liberec

Occupation of Liberec occurred on 21 August 1968 during the Warsaw Pact invasion of Czechoslovakia. In the early hours of the Soviet invasion, 4 people were shot dead by Soviet troops in the main square and 24 were injured, 2 of whom died later; a few hours after this, a Soviet tank rammed the arcade at the square causing the immediate death of 2 people and injured 9 (1 died later); Occupation of Liberec was second bloodiest event of the invasion after Battle for Czechoslovak Radio.

Liberec, Czechia · War & conflict · Checked 2026-09-23

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1969 — Operation Camden (1969)

Operation Camden was an Australian Army in support of the 501 Land Clearing Company, United States Army Corps of Engineers who were undertaking land clearing operations in the Hat Dich area. A large contact took place on 21 August 1969 during Operation Camden south of the Hat Dich Secret Zone in Phuoc Tuy Province against Viet Cong forces. The battle was fought between 3 Platoon and the Assault Pioneer Platoon of the 5th Battalion, Royal Australian Regiment (5RAR) and the Viet Cong 3rd Battalion, 274th Regiment.

United States · War & conflict · Checked 2026-09-23

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1971 — Plaza Miranda bombing

The Plaza Miranda bombing occurred during a political campaign rally of the Liberal Party at Plaza Miranda in the district of Quiapo, Manila in the Philippines on August 21, 1971. It caused nine deaths and injured 95 others, including many prominent Liberal Party politicians.

Philippines · War & conflict · Checked 2026-09-23

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1983 — Assassination of Benigno Aquino Jr.

The assassination of Benigno Aquino Jr., former Philippine Senator, took place on Sunday, August 21, 1983 at Manila International Airport. Aquino, also a longtime political opponent of President of the Philippines Ferdinand Marcos, had just landed in his home country after a 3-year self-imposed exile in the United States when he was shot in the head while being escorted from an aircraft to a vehicle that was waiting to transport him to prison.

Manila, Philippines · War & conflict · Checked 2026-09-23

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1983 — 1983 Taça de Portugal final

The 1983 Taça de Portugal final was the final match of the 1982–83 Taça de Portugal, the 43rd season of the Taça de Portugal, the premier Portuguese football cup competition organized by the Portuguese Football Federation (FPF). The match was played on 21 August 1983 at the Estádio das Antas in Porto, and opposed two Primeira Liga sides: Benfica and Porto.

Porto, Portugal · Sport · Checked 2026-09-24

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1985 — 1985 Artemio Franchi Cup

The 1985 Artemio Franchi Cup was the first edition of the Artemio Franchi Cup, a football match between the winners of the previous South American and European championships. The match featured France, winners of UEFA Euro 1984, and Uruguay, winners of the 1983 Copa América. It was played at Parc des Princes in Paris, France, on 21 August 1985.

Paris, France · Sport · Checked 2026-09-24

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1994 — Mexican general election, 1994

General elections were held in Mexico on 21 August 1994. The presidential elections resulted in a victory for Ernesto Zedillo of the Institutional Revolutionary Party, whilst the PRI won 300 of the 500 seats in the Chamber of Deputies and 95 of the 128 seats in the Senate. Voter turnout ranged from 77.4% in the proportional representation section of the Chamber elections to 75.9% in the constituency section.

Mexico · Politics & society · Checked 2026-09-23

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1994 — Royal Air Maroc Flight 630

Royal Air Maroc Flight 630 was a passenger flight on 21 August 1994 which crashed approximately ten minutes after takeoff from Agadir–Al Massira Airport in Morocco. All 44 passengers and crew on board were killed. It was the deadliest ATR 42 aircraft crash at that point in time. An investigation showed that the crash was deliberately caused by one of the pilots.

Morocco · Disasters · Checked 2026-09-23

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2004 — UFC 49

UFC 49: Unfinished Business was a mixed martial arts event held by the Ultimate Fighting Championship on August 21, 2004, at the MGM Grand Arena in Las Vegas, Nevada. The event was broadcast live on pay-per-view in the United States, and later released on DVD.

Las Vegas, United States · Sport · Checked 2026-09-23

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2005 — SummerSlam (2005)

SummerSlam (2005) was the eighteenth annual SummerSlam professional wrestling pay-per-view event produced by World Wrestling Entertainment (WWE). It was presented by THQ's WWE Day of Reckoning 2 and took place on August 21, 2005, at the MCI Center in Washington, D.C. featured talent from the Raw and SmackDown! brands. The main match on the Raw brand was Hulk Hogan versus Shawn Michaels, which Hogan won by pinfall after executing a leg drop. The predominant match on the SmackDown brand was a No Holds Barred match for the World Heavyweight Championship between Batista and John "Bradshaw" Layfield (JBL), which Batista won by pinfall after executing two Batista Bombs, with the second on the steel ring steps.

Washington, D.C., United States · Arts & culture · Checked 2026-09-23

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2007 — California's 37th congressional district special election, 2007

California's 37th congressional district special election, 2007 was held on August 21, 2007 to replace the seat of Congresswoman Juanita Millender-McDonald, who died of cancer on April 22, 2007. California State Assemblymember Laura Richardson received the plurality of votes in an open primary election on June 26. Since no candidate won a majority of votes in that contest, the special election was held on August 21, in which Richardson was the winner.

California, United States · Politics & society · Checked 2026-09-23

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2008 — Festival de las Máscaras (2008)

The 2008 Festival de las Máscaras (Spanish for "Festival of the Mask") was a major lucha libre event produced and scripted by the Mexican International Wrestling Revolution Group (IWRG) professional wrestling promotion on August 21, 2008. The show was held in Arena Naucalpan, Naucalpan, State of Mexico, which is IWRG's primary venue. For the first ever Festival de las Máscaras show Halcón Ortiz, Mano Negra, El Pantera, El Audaz, Cien Caras, Máscara Año 2000 and Universo 2000 were all allowed to wrestle wearing the mask they had previous lost in a Lucha de Apuestas, or "bet match".

Naucalpan, Mexico · State of Mexico, Mexico · Arts & culture · Checked 2026-09-23

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2009 — Verano de Escándalo (2009)

Verano de Escándalo (2009) was a professional wrestling event produced by Asistencia Asesoría y Administración (AAA), which took place on August 21, 2009 in Ciudad Madero, Tamaulipas, Mexico. It was the 13th event in the Verano de Escándalo chronology and featured seven matches.

Ciudad Madero, Mexico · Tamaulipas, Mexico · Arts & culture · Checked 2026-09-23

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2010 — Australian federal election, 2010

A federal election was held on Saturday, 21 August 2010 for members of the 43rd Parliament of Australia. The incumbent centre-left Australian Labor Party led by Prime Minister Julia Gillard won a second term against the opposition centre-right Liberal Party of Australia led by Opposition Leader Tony Abbott and Coalition partner the National Party of Australia, led by Warren Truss, after Labor formed a minority government with the support of three independent MPs and one Australian Greens MP. Labor and the Coalition each won 72 seats in the 150-seat House of Representatives, four short of the requirement for majority government, resulting in the first hung parliament since the 1940 election.

Australia · Politics & society · Checked 2026-09-23

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2010 — Strikeforce: Houston

Strikeforce: Houston, was a mixed martial arts event held by Strikeforce on August 21, 2010 at the Toyota Center in Houston, Texas, United States.

Houston, United States · Sport · Checked 2026-09-23

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2013 — Ghouta chemical attack

The Ghouta chemical attack occurred in Ghouta, Syria, during the Syrian Civil War in the early hours of 21 August 2013. Two opposition-controlled areas in the suburbs around Damascus, Syria were struck by rockets containing the chemical agent sarin. Estimates of the death toll range from at least 281 people to 1,729. The attack was the deadliest use of chemical weapons since the Iran–Iraq War. Inspectors from the United Nations Mission already in Syria to investigate an earlier alleged chemical weapons attack, requested access to sites in Ghouta the day after the attack, and called for a ceasefire to allow inspectors to visit the Ghouta sites.

Syria · War & conflict · Checked 2026-09-23

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2014 — West Midlands Police and Crime Commissioner by-election, 2014

The West Midlands Police and Crime Commissioner by-election, 2014 was a by-election for the position of Police and Crime Commissioner in the West Midlands Police region of the United Kingdom, held on 21 August 2014. It was triggered by the death of Bob Jones, the inaugural West Midlands Police and Crime Commissioner, who died on 1 July 2014. The election had to be held with 35 working days of the vacancy by virtue of Section 51 of the Police Reform and Social Responsibility Act 2011. On 4 July 2014, Birmingham City Council, who oversaw the election, confirmed that the poll would be held on 21 August 2014.

United Kingdom · Politics & society · Checked 2026-09-23

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2016 — SummerSlam (2016)

SummerSlam (2016) was a professional wrestling pay-per-view (PPV) event and WWE Network event produced by WWE. It took place on August 21, 2016 at the Barclays Center in Brooklyn, New York. It was the twenty-ninth event under the SummerSlam chronology, the second consecutive SummerSlam at this particular venue, and the first event under the reintroduction of the WWE brand extension. Twelve matches were contested at the event, including three matches contested on the pre-show. In the main event, Brock Lesnar defeated Randy Orton by technical knockout while in other marquee matches, Finn Bálor defeated Seth Rollins to become the inaugural WWE Universal Champion, Dean Ambrose defeated Dolph Ziggler to retain the WWE World Championship, and AJ Styles defeated John Cena.

Brooklyn, United States · New York, United States · Arts & culture · Checked 2026-09-23

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2020 — 2020 UEFA Europa League final

The 2020 UEFA Europa League final was the final match of the 2019–20 UEFA Europa League, the 49th season of Europe's secondary club football tournament organised by UEFA, and the 11th season since it was renamed from the UEFA Cup to the UEFA Europa League. It was played at the RheinEnergieStadion in Cologne, Germany on 21 August 2020, between Spanish side Sevilla and Italian side Inter Milan.

Germany · Sport · Checked 2026-09-24

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2021 — SummerSlam (2021)

The 2021 SummerSlam was a professional wrestling pay-per-view (PPV) and livestreaming event produced by WWE, held for wrestlers from the promotion's main roster brands, Raw and SmackDown. It was the 34th annual SummerSlam and took place on Saturday, August 21, 2021, at Allegiant Stadium in the Las Vegas suburb of Paradise, Nevada.

Las Vegas, United States · Nevada, United States · Arts & culture · Checked 2026-09-24

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2021 — UFC on ESPN: Cannonier vs. Gastelum

UFC on ESPN: Cannonier vs. Gastelum (also known as UFC on ESPN 29 and UFC Vegas 34) was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on August 21, 2021, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States.

Nevada, United States · Sport · Checked 2026-09-24

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2025 — PFL 10 (2025)

The PFL 10 mixed martial arts event for the 2025 season of the Professional Fighters League was held on August 21, 2025, at Seminole Hard Rock Hotel & Casino Hollywood in Hollywood, Florida, United States. This event marked the finals of the single-elimination tournament format in the Heavyweight, Light heavyweight and Middleweight divisions.

Florida, United States · Sport · Checked 2026-09-23

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