Most knockdowns per 15 minutes
Knockdowns scored per 15 minutes of fight time. At least 5 fights.
UFCStats has round-by-round statistics for only 83%–95% of fights in 1994–1998. Fights without them are left out of these totals.
UFC 1 (November 1993) is not in UFCStats, so its fights are missing.
1,271 fighters.