Weidman vs. Rockhold: Weidman has a history of knee issues and has gotten injured the last 2 times he was supposed to defend his title at UFC 184 against Belfort, and UFC 173 against Machida last year. Aldo vs. McGregor: Aldo is notorious for pulling out of title fights with injuries. He's pulled out of several scheduled fights over the last couple of years. Jacare vs. Romero: They tried to make this fight happen twice at UFC 184 and then UFC on FOX. First time Jacare had pneumonia and second time Romero tore his meniscus.