The UFC Vegas 23 weigh-in results are in with Saturday's main event fighters easily hitting the mark. The UFC Vegas 23 weigh-ins took place on Friday at the UFC Apex in Las Vegas. UFC Vegas 23 weigh-in results The UFC Vegas on 23 (aka UFC on ABC 2) main event pits fast-rising middleweight contender Marvin Vettori against late-replacement Kevin Holland. No. 6 ranked Vettori was originally slated to meet no. 5 ranked Darren Till, but Till had to withdraw because of a broken collarbone. Anxious to get the fight in, Vettori was first to the scale, weighing 186 pounds, the upper limit for a middleweight non-title bout.