Third time lucky for Diaz at weigh-in
Lightweight champion Ben Henderson and No. 1 contender Nate Diaz each made weight during Friday's official UFC on Fox weigh-in at the KeyArena.
Diaz (16-7) had a bit of trouble getting there, weighing in at 155.6 pounds on his first attempt. Due to stricter weight guidelines on title fights, Diaz was forced to cut the .6 pounds, eventually weighing in at 155 on his third attempt.
Henderson (17-2) weighed 154.6 pounds. The former WEC champ is looking to make his second successful title defence. The first came via a somewhat controversial decision over Frankie Edgar in August.
All the other fighters set to compete on Saturday's main card made weight. Former lightweight and welterweight champion BJ Penn (16-8-2) weighed in at 168.2 pounds for his highly anticipated fight against Canadian Rory MacDonald (13-1).
Light heavyweight Mauricio Rua (21-6) weighed 205 pounds. He faces Alexander Gustafsson (14-1) in the night's co-main event. Gustafsson weighed 205.4 pounds.
Late replacement Marcus LeVesseur weighed in at 155.5 pounds for a lightweight contest against Abel Trujillo. LeVesseur agreed to fight on just one day's notice after Tim Means reportedly injured himself when he slipped in a sauna earlier in the day.