Picking winners in mixed martial arts is never easy. The sport is unpredictable, the fighters at the highest levels are usually fairly evenly matched, and every event has a few surprises.

That’s why what one bettor did this weekend is so impressive: He got all 12 fights right at UFC 131, and put his money where his predictions were. The online sports book Bodog.eu confirmed on Monday that a bettor (who has not been publicly identified) put down $200 on a 12-fight parlay, went 12-for-12, and made $51,547.

“Hitting parlays in MMA happens often but to hit every fight right on a 12-fight card in one night is unheard of, especially that the parlay included a mix of favorites and a few medium underdogs, including two controversial decisions that went in the bettor’s favor.” Bodog Sports Book Director Richard Gardner told MMAFighting.com.