These ratings are based on the Elo rating system designed for chess and other zero sum games.
There are two variables set for this implementation of the Elo system;
The starting elo is the initial rating that a new player gets when they enter the system. The K factor is the maximum rating change per game.
This system works by calculating the expected outcome of a contest based on the current rating of the two fighters and then comparing this to the actual outcome. Once this has been done, a number of points will be taken from the loser's rating and added to the winner's rating. The closer to the expected outcome, the fewer points that are allocated.
New points only enter the system when a new fighter has their first fight and they only leave the system when a fighter retires.
These ratings exclude fighters who have not fought within the last 18 months.
For more information on the elo rating system, you can read the Wikipedia page on the topic.
Please be aware that these ratings are calculated pound-for-pound, not per weight class. Fighters who recently switched weight class have ratings based primarily on having competed in their previous class and are not adjusted to their new class.
|#||Name||Rating||Record||Promotion||Gender||Last Fight||Weight Class|
|1 ■||Jon Jones Bones||2061.5||25-1 (1)||Ultimate Fighting Championship||Male||06 Jul 2019||205|
|2 ▲+1||Tony Ferguson El Cucuy||1968.8||28-3||Ultimate Fighting Championship||Male||08 Jun 2019||155|
|3 ▲+1||Ryan Bader Darth||1955.5||30-5||Bellator MMA||Male||26 Jan 2019||265|
|4 ▲+1||Khabib Nurmagomedov The Eagle||1952.5||27-0||Ultimate Fighting Championship||Male||06 Oct 2018||155|
|5 ▼-3||Daniel Cormier DC||1948.5 ▼-83.1||22-2 (1)||Ultimate Fighting Championship||Male||17 Aug 2019||265|
|6 ■||Dustin Poirier The Diamond||1948.4||28-5 (1)||Ultimate Fighting Championship||Male||13 Apr 2019||155|
|7 ■||Max Holloway Blessed||1942.8||22-4||Ultimate Fighting Championship||Male||27 Jul 2019||145, 155|
|8 ▲+7||Stipe Miocic||1931.5 ▲+83.1||24-3||Ultimate Fighting Championship||Male||17 Aug 2019||265|
|9 ▼-1||Kamaru Usman The Nigerian Nightmare||1927.7||17-1||Ultimate Fighting Championship||Male||02 Mar 2019||170|
|10 ▼-1||Patricio Pitbull||1904.9||29-4||Bellator MMA||Male||11 May 2019||145, 155|
|11 ■||Robert Whittaker The Reaper||1893.5||20-4||Ultimate Fighting Championship||Male||09 Jun 2018||185|
|12 ■||Tyron Woodley The Chosen One||1885.1||21-4-1||Ultimate Fighting Championship||Male||02 Mar 2019||170|
|13 ■||Henry Cejudo The Messenger||1870.1||15-2||Ultimate Fighting Championship||Male||08 Jun 2019||125, 135|
|14 ■||Alexander Volkanovski The Great||1867||20-1||Ultimate Fighting Championship||Male||11 May 2019||145|
|15 ▲+1||Gegard Mousasi The Dreamcatcher||1847.8||45-8-1||Bellator MMA||Male||22 Jun 2019||185|
|16 ▲+1||Demetrious Johnson Mighty Mouse||1847.4||31-3-1||ONE Championship||Male||02 Aug 2019||125, 135|
|17 ▲+1||Colby Covington Chaos||1841.6||14-1||Ultimate Fighting Championship||Male||03 Aug 2019||170|
|18 ▲+1||Leon Edwards Rocky||1837||19-3 (1)||Ultimate Fighting Championship||Male||20 Jul 2019||170|
|19 ▲+1||Douglas Lima The Phenom||1836.6||30-7||Bellator MMA||Male||11 May 2019||170|
|20 ▲+1||Conor McGregor The Notorious||1828.6||22-4||Ultimate Fighting Championship||Male||06 Oct 2018||155|
|21 ▲+1||Israel Adesanya The Last Stylebender||1828.3||17-1||Ultimate Fighting Championship||Male||13 Apr 2019||185|
|22 ▲+1||Aljamain Sterling Funk Master||1815.4||20-4||Ultimate Fighting Championship||Male||08 Jun 2019||135|
|23 ▲+1||Justin Gaethje The Highlight||1811.9||26-2||Ultimate Fighting Championship||Male||30 Mar 2019||155|
|24 ▲+1||Lance Palmer The Party||1809||19-3||Professional Fighters League||Male||25 Jul 2019||145|
|25 ▲+1||Jon Fitch||1806.4||33-7-2||Bellator MMA||Male||27 Apr 2019||170|