Rae Yoon Ok already flexed his superiority once. Now, he must prove he can do so again.

The South Korean upstart will defend his undisputed One Championship lightweight crown when his rematch with former champion Christian Lee headlines One 160 on Friday at Singapore Indoor Stadium in Kallang, Singapore. Ok climbs into the cage with fuel from a five-fight winning streak powering his engines, while Lee has rattled off six victories across his past seven outings. Neither man has competed since Ok took a five-round unanimous decision in their first encounter at One “Revolution” on Sept. 24.

As Ok and Lee move ever closer to their hotly anticipated second confrontation, a look at some of the numbers that have accompanied them to this point:

31: Years of age for Ok, who was born in Busan, South Korea, on March 23, 1991.

11: Ok wins by decision, accounting for 69% of his career total (16). Among those he has outpointed on the scorecards: Lee, Eddie Alvarez, Marat Gafurov and Won Bin Ki. Ok holds four other wins by knockout or technical knockout (25%) and one more by submission (6%).

1,273: Days since Ok last experienced a setback. He suffered his most recent defeat on March 2, 2019, when he dropped a unanimous decision to Brazilian journeyman Tom Santos in the Heat 44 co-main event.

3: First-round finishes on the Ok resume, highlighted by his 55-second technical knockout of Eun Seok Park under the Angel’s Fighting Championship banner in 2017.

41: Combined victories between the three men—Santos, Burenzorig Batmunkh and Yadong Song—who have defeated Ok. They sport a cumulative .577 winning percentage at 41-29-1.

24: Years of age for Lee, who was born on June 21, 1998 in Vancouver, British Columbia.

10: Lee victories by knockout or technical knockout, accounting for 66% of his career total (15). His list of victims includes Timofey Nastyukhin, Iuri Lapicus, Shinya Aoki, Kazuki -Tokudome-26192">Kazuki Tokudome and Kotetsu Boku. Lee owns four other wins by submission (27%) and one more by decision (7%).

29: Seconds needed for Lee to punch out David Meak at One 36 in his Dec. 11, 2015 professional debut. Nearly seven years later, it remains his fastest finish to date.

7: Consecutive calendar years in which Lee has fought at least once. The Evolve MMA standout went 1-0 in 2015, 4-1 in 2016, 3-0 in 2017, 2-2 in 2018, 3-0 in 2019, 1-0 in 2020 and 1-1 in 2021.

.729: Cumulative winning percentage between the three men—Ok, Martin Nguyen (twice) and Edward Kelly—who have beaten Lee. They boast a combined record of 43-16.