Boxing in the 2020s

January

• January 8 – Jeison Roasrio knocked out Julian Williams in the 5th round to win the WBA (Super), IBF, and IBO light middleweight titles.[1]

February

• February 8 – Gary Russell Jr. defeated Tugstsogt Nyambayar by unanimous decision to retain his WBC featherweight title[2]
• February 15 – Caleb Plant successfully defended his IBF Super Middleweight title defeating Vincent Feigenbutz in the 10th round by technical knockout when the referee waived off the fight.[3]
• February 22 – In the second part of what became a trilogy, Tyson Fury defeated Deontay Wilder in the 7th round when Wilder's corner threw in the towel, winning the WBC Heavyweight Title and then-vacant The Ring heavyweight title[4]

March

• March 7 – Robert Helenius defeated Adam Kownacki in the 4th round by technical knockout to win the vacant WBA Gold heavyweight title[5]

August

• August 1 – Angelo Leo defeated Tramaine Williams by unanimous decision to win the vacant WBO Junior Featherweight title[6]
• August 8 – Jamal James defeated Thomas Dulorme by unanimous decision to win the vacant WBA interim welterweight title[7]
• August 22 – Shawn Porter defeated Sebastian Formella by unanimous decision to win the vacant WBC Silver welterweight title[8]
• August 29 – Erislandy Lara defeated Greg Vendetti by unanimous decision to retain the WBA (Regular) Light Middleweight title and win the vacant IBO Light Middleweight title[9]

September

• September 20 – Juan Carlos Payano fought former champion Daniel Roman, who was ranked No. 3 by Ring Magazine, WBA and WBC and No. 4 by the WBO and No. 6 at super bantamweight at the time. Payano lost the fight via unanimous decision.

October

• October 31 – Gervonta Davis knocked out Léo Santa Cruz in the sixth round to remain unbeaten with a record of 24-0 and winning the WBA World Super Featherweight and World Lightweight titles.[10]
• October 31 – Mario Barrios remained unbeaten and retained his WBA World Super Lightweight title knocking out Ryan Karl in the sixth round.[11]

February

• February 20 - At Las Vegas, Nevada. In a major upset, Oscar Valdez knocks out Miguel Berchelt in the 10th round to win the WBC Junior Lightweight title.

October

• October 9 - In the final part of the trilogy, Tyson Fury knocks out Deontay Wilder in the 11th round to retain his WBC and The Ring Heavyweight title. This bout would be the Ring Magazine fight of the year for 2021.

December

• December 11 - At New York's Madison Square Garden, Vasiliy Lomachenko beat Richard Commey via unanimous decision.

January

• January 22 – Joe Smith Jr. retained his WBO light heavyweight title with a 9th-round TKO over Steve Geffrard.

March

• March 12 - In which some boxing experts call the fight of the year, Leigh Wood came from behind to knock out Michael Conlin in the 12th round to retain his WBA featherweight title

September

• September 3 - In Mexico, Sivenathi Nontshinga earned a unanimous decision over Hector Flores to take the vacant IBF flyweight championship.

January

• January 8 - Gervonta Davis stops Hector Luis Garcia in 8 rounds to retain his WBA Lightweight title.

February

• February 18 - Mauricio Lara stops Leigh Wood in 7 rounds to win the WBA Featherweight title.

August

• August 12 - Anthony Joshua knocks out Robert Helenius in 7 rounds at the 02 Arena in London, England.
• August 26 - Oleksandr Usyk knocks out Daniel Dubois in 9 rounds to retain the WBA (Super), IBF, WBO, IBO and the Ring Heavyweight championship.

September

• September 30 - Canelo Alvarez defeated Jermell Charlo via unanimous decision to retain the WBA (Super), IBF, WBO, IBO and the Ring Super Middleweight title.

November

• November 4 - Tyson Fury survives a third round knockdown to beat Francis Ngannou in a controversial split decision win.
• November 25 - David Benavidez defeated Demetrius Andrade via 6th round stoppage to maintain his Interim WBC Super Middleweight title.

January

• January 13 - Artur Beterbiev beat Callum Smith with a 7th round TKO to retain the IBF, WBC, and WBO Light Heavyweight Championship.

February

• February 3 - Conor Benn kept his unbeaten record intact after beating American Peter Dobson in Las Vegas by unanimous decision.
• February 16:
  • In Mexico, Sivenathi Nontshingha knocks out Adrian Curiel in the 10th round to regain the IBF Light Flyweight Championship.
  • In Madison Square Garden in New York City, O'Shaquie Foster beat Abraham Nova via split decision to retain the WBC Super Featherweight Championship.

May

• May 18 - In Riyadh, Saudi Arabia, Oleksandr Usyk defeated Tyson Fury by split decision to become the first undisputed heavyweight champion since Lennox Lewis in 1999, and the first of the four-belt era.[12]

June

• June 1 - Boxers from Queensberry Promotions and Matchroom went head-to-head in a 5v5 card. Queensberry completed a clean sweep, with all five of their fighters winning every bout.[13]