Anthony Joshua once again holds three of boxing's four major heavyweight world titles following his superb victory over Andy Ruiz Jr.
After outpointing the Mexican-American in Saudi Arabia, Joshua is once again the closest we have to a unified world champion across 17 weights in the sport.
Oleksandr Usyk held that distinction before his decision to vacate the cruiserweight belts and move up to the heavyweight ranks earlier this year.
While there is a host of 'regular', interim and diamond title belts regularly confusing matters, the WBC, WBA, IBF and WBO each have their own definitive world champion.
Standard Sport lists the current belt holders below.
Heavyweight
| WBC | Deontay Wilder |
| WBA (Super) | Anthony Joshua |
| IBF | Anthony Joshua |
| WBO | Anthony Joshua |
Cruiserweight
| WBC | Vacant |
| WBA (Super) | Arsen Goulamirian |
| IBF | Yuniel Dorticos |
| WBO | Vacant |
Light heavyweight
| WBC | Artur Beterbiev |
| WBA | Dmitry Bivol |
| IBF | Artur Beterbiev |
| WBO | Saul 'Canelo' Alvarez |
Super middleweight
| WBC | David Benavidez |
| WBA (Super) | Callum Smith |
| IBF | Caleb Plant |
| WBO | Billy Joe Saunders |
Middleweight
| WBC | Jermall Charlo |
| WBA (Super) | Saul 'Canelo' Alvarez |
| IBF | Gennady Golovkin |
| WBO | Demetrius Andrade |
Super welterweight
| WBC | Tony Harrison |
| WBA | Julian Williams |
| IBF | Julian Williams |
| WBO | Patrick Teixeira |
Welterweight
| WBC | Errol Spence Jr |
| WBA (Super) | Manny Pacquiao |
| IBF | Errol Spence Jr |
| WBO | Terence Crawford |
Super Lightweight
| WBC | Jose Ramirez |
| WBA | Josh Taylor |
| IBF | Josh Taylor |
| WBO | Jose Ramirez |
Lightweight
| WBC | Devin Haney |
| WBA | Vasyl Lomachenko |
| IBF | Richard Commey |
| WBO | Vasyl Lomachenko |
Super featherweight
| WBC | Miguel Berchelt |
| WBA (Super) | Leo Santa Cruz |
| IBF | Tevin Farmer |
| WBO | Jamel Herring |
Featherweight
| WBC | Gary Russell Jr |
| WBA (Super) | Leo Santa Cruz |
| IBF | Josh Warrington |
| WBO | Shakur Stevenson |
Super bantamweight
| WBC | Rey Vargas |
| WBA (Super) | Daniel Roman |
| IBF | Daniel Roman |
| WBO | Emanuel Navarrete |
Bantamweight
| WBC | Nordine Oubaali |
| WBA (Super) | Naoya Inoue |
| IBF | Naoya Inoue |
| WBO | John Riel Casimero |
Super flyweight
| WBC | Juan Francisco Estrada |
| WBA | Kal Yafai |
| IBF | Jerwin Ancajas |
| WBO | Kazuto Ioka |
Flyweight
| WBC | Vacant |
| WBA | Artem Dalakian |
| IBF | Moruti Mthalane |
| WBO | Kosei Tanaka |
