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.
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.