Overall Breakdown:
Since UFC 31, there have been a total of 546 fights inside the octagon. Of these, 225 have ended by knockout, 138 by submission, 141 by unanimous decision, 31 by split decision, three by majority decision, and three by disqualification. There have also been three draws and two no-contests.
Lightweights:
There have been 107 lightweight fights since the Zuffa era began. The lightweights have gone the distance 47 percent of the time, which is the most of any division by far. 27 percent of fights have ended by submission, and 25 percent by knockout.
Welterweights:
Welterweight is the busiest division in the UFC with 120 total fights. The welterweights also seem to be the most well-rounded, with 39 knockouts, 34 submissions, and 36 unanimous decisions.
Middleweights:
The middleweights have fought 108 times. The totals for knockouts (40) and submissions (39) are nearly identical. Only 29 percent of the fights have gone to a decision, which is a steady decrease from their lightweight (47 percent) and welterweight (38 percent) counterparts.
Light Heavyweights:
This is the least busy division in the UFC, with a total of 103 fights. Over half the fights have ended by knockout (51 percent), but only 15 percent by submission. Two of the three DQ's in UFC history have come in this division.
Heavyweights:
The heavyweights are tied with the middleweights with 108 fights. A staggering 80 percent of these fights have been finished (61 percent by knockout, 19 percent by submission). We have seen heavyweight fights end seven different ways: knockout, submission, unanimous decision, split decision, majority decision, disqualification, and draw.
Title Fights:
There have been 69 title fights in UFC history. Of these 69 fights, 52 percent have ended by knockout. Overall, there have been 18 title fights in the heavyweight division, 16 in each the light heavyweight and welterweight divisions, 12 in the middleweight division, and only 7 in the lightweight division.















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