The UFC returns to its home base of Las Vegas on Saturday with UFC on ESPN 25, which takes place at the UFC Apex with a lineup set to air on ESPN2 and stream on ESPN+.
Featherweight contenders clash in the main event of the night. Chan Sung Jung (16-6 MMA, 6-3 UFC) will attempt to return to the win column after losing a title eliminator against Brain Ortega when he takes on Dan Ige (15-3 MMA, 7-2 UFC) in an important bout for the division.
For more on the numbers behind the headliner, as well as the rest of the card, check below for 35 pre-event facts about UFC on ESPN 25.
Chan Sung Jung vs. Dan Ige
Jung competes in his eighth consecutive UFC headliner. He’s 4-3 in previous main event fights.
Jung is the only South Korean fighter in history to challenge for a UFC title. He lost to then-champ Jose Aldo at UFC 163 in August 2013.
Jung is 3-2 since he returned from a more than three-year layoff from competition in February 2017
Jung has earned 15 of his 17 career victories by stoppage. That includes all six of his UFC wins.
Jung’s six stoppage victories in UFC featherweight competition are tied for third most in divisional history behind Max Holloway (10) and Ricardo Lamas (seven).
Jung’s 6.2-second knockout of Mark Hominick at UFC 140 is the third fastest knockout in UFC history behind Jorge Masvidal’s five-second win at UFC 239 and Duane Ludwig’s six-second finish at UFC Fight Night 3.
Jung is one of two featherweights in UFC/WEC combined history to earn multiple knockout wins in less than one minute. Ige is the other.
Jung registered the first twister submission finish in UFC history when he defeated Leonard Garcia at UFC Fight Night 24. Bryce Mitchell has the only other finish using the technique in company history.
Jung’s eight fight-night bonuses for UFC featherweight bouts are tied with Holloway and Cub Swanson for the most in divisional history.
Jung is the only fighter in UFC history to earn eight total bonuses in his first eight octagon appearances.
Ige has earned nine of his 15 career victories by stoppage. All three of his UFC stoppage victories have come in Round 1.
Ige is one of two featherweights in UFC/WEC combined history to earn multiple knockout wins in less than one minute. Jung is the other.
Ige’s 16-second knockout of Gavin Tucker at UFC Fight Night 187 is sixth fastest in UFC featherweight history.
Aleksei Oleinik vs. Serghei Spivac
Aleksei Oleinik (59-15-1 MMA, 8-6 UFC), 43, is the oldest active fighter in the UFC heavyweight division and is the oldest of all fighters scheduled to compete at the event.
Oleinik was the first fighter in MMA history to earn victories in four different decades (1990s, 2000s, 2010s, 2020s).
Oleinik has earned 54 of his 59 career victories by stoppage. That includes seven of his eight UFC wins.
Oleinik has earned 46 of his 54 career stoppage victories by submission.
Oleinik’s six submission victories in UFC heavyweight competition are tied with Stefan Struve for second most in divisional history behind Frank Mir (eight).
Oleinik has earned two of the three Ezekiel-choke submission victories in UFC history. He accomplished the feat at UFC 224 and UFC Fight Night 103. Remco Pardoel also won with the technique at UFC 2.
Serghei Spivac (12-2 MMA, 3-2 UFC) has earned 11 of his 12 career victories by stoppage.
Marlon Vera vs. Davey Grant
Marlon Vera’s (16-7-1 MMA, 10-6 UFC) has earned nine of his 10 UFC victories by stoppage.
Vera’s eight stoppage victories in UFC bantamweight competition are tied with T.J. Dillashaw for most in divisional history.
Vera’s four submission victories in UFC bantamweight competition are tied or third most in divisional history behind Urijah Faber (six) and Rani Yahya (five).
Davey Grant (12-4 MMA, 4-3 UFC) has earned 10 of his 12 career victories by stoppage. He’s finished two of his UFC wins by knockout.
Matt Brown vs. Dhiego Lima
Matt Brown (22-18 MMA, 15-12 UFC) competes in his 28th UFC welterweight bout, the most appearances in divisional history.
Brown is 3-7 in his past 10 bouts after going on a seven-fight UFC winning streak from 2012-2014.
Brown’s 15 victories in UFC welterweight competition are tied for fourth most in divisional history behind Georges St-Pierre (19), Neil Magny (18) and Matt Hughes (16).
Brown’s 13 stoppage victories in UFC welterweight competition are the most in divisional history.
Brown’s 11 knockout victories in UFC competition are tied for third most in company history behind Vitor Belfort (12) and Derrick Lewis (12).
Brown’s 11 knockout victories in welterweight competition are the most in divisional history.
Brown’s 24 submission attempts in UFC welterweight competition are second most in divisional history behind Chris Lytle (31).
Brown’s eight stoppage losses in UFC competition are tied for third most in company history behind Tim Boetsch (nine) and Andrei Arlovski (nine).
Dhiego Lima (15-8 MMA, 4-6 UFC) is 3-3 since he returned to the UFC for a second stint in July 2017.
Julian Erosa (24-8 MMA, 3-4 UFC) improved to 2-0 since he returned to the UFC for a third stint in June 2020.
Erosa has earned 21 of his 24 career victories by stoppage.
