The co-main event of UFC 151 was scheduled to be a welterweight bout with Josh Koscheck meeting Jake Ellenberger, but an injury has forced the former title contender off the card. 
During Tuesday night’s “UFC Tonight” on FUEL TV, it was announced that Koscheck has a bulging disk in his back and is out of UFC 151.
A new opponent for Ellenberger was not announced and a new opponent will be announced soon.
UFC 151 takes place on September 1st from the Mandalay Bay Events Center in Las Vegas and will be headlined by Jon Jones defending his light heavyweight title against former Pride and Strikeforce champion Dan Henderson.
The current UFC 151 fight card is below:
Jon Jones (Champ) vs. Dan Henderson – Light Heavyweight Title
Jake Ellenberger vs. TBA
Dennis Siver vs. Eddie Yagin
Michael Johnson vs. Danny Casillo
Kyle Noke vs. Charlie Brenneman
Takeya Mizugaki vs. Jeff Hougland
Tim Means vs. Abel Trujillo
Daron Cruickshank vs. Henry Martinez
John Lineker vs. Yasuhiro Urushitani
Shane Roller vs. Jacob Volkmann