Before their title clash at UFC 163 on Saturday, take a look at some of the impressive UFC/WEC records held by champion Jose Aldo (22-1) and his challenger, Chan Sung Jung (19-3).
12 Most wins of any featherweight, a record held by Jose Aldo
50 Percent more wins he has than the 145er with the second-most wins
8 Most wins by knockout in the featherweight division, a record held by Jose Aldo
166 Percent more knockout wins he has than the 145er with the second-most KOs
6.2 Time, in seconds, of the fastest knockout in featherweight history, Chan Sung Jung's win over Mark Hominick at UFC 140 (watch)
8 Time, in seconds, of the second-fastest knockout in featherweight history, Jose Aldo's win over Cub Swanson at WEC 41 (watch)
7 Number of career knockdowns by Jose Aldo, the most in featherweight history
503 Total number of significant strikes landed by Leonard Garcia, the most in 145-pound history (Aldo is runner-up with 495 strikers)
1 Rank of Jose Aldo on lists of featherweights with the best striking and takedown defense
5 Number of post-fight bonuses Chan Sung Jung has won in his last five fights
2010 Year in which Jose Aldo was named UFC champion after the WEC/UFC merger
44 WEC event at which Jose Aldo defeated Mike Brown to take the featherweight title (watch)
4 Number of times he's defended his title
2 Number of times he's defended his title against a fighter who'd previously fought in a higher weight class (Kenny Florian and Frankie Edgar)