confirmed for the game are
Heavyweight (206lbs-265lbs)
Cain Velasquez, Junior Dos Santos, Brock Lesnar
Light Heavyweight (186lbs-205lbs)
Jon Jones, Tito Ortiz, Rampage Jackson (+ Pride Version), Shogun Rua, Chuck Liddell, Brandon Vera, Rashad Evans, Ryan Bader, Forrest Griffin, Rich Franklin
Middleweight (171lbs-185lbs)
Anderson Silva, Vitor Belfort, Chris Leben, Wanderlei Silva (+ Pride Version), Demian Maia, Chael Sonnen,
Welterweight (156lbs-170lbs)
Dan Hardy, Carlos Condit, Georges St-Pierre (also as Middleweight), Matt Hughes, Jon Fitch,
Lightweight (146lbs-155lbs)
Ben Henderson, Melvin Guillard, BJ Penn, Joe Stevenson, Frankie Edgar, Evan Dunham, Sean Sherk, Anthony Pettis, Ross Pearson, Dennis Siver, Gray Maynard
Featherweight (136lbs-1445lbs)
Jose Aldo, Leonard Garcia, Kenny Florian,
Bantamweight (126lbs-135lbs)
Urijah Faber (also as Bantamweight), Dominick Cruz, Miguel Torres, Scott Jorgenson