An undisclosed injury has forced Gunnar Nelson to pull out of his UFC 160 bout against Mike Pyle and UFC veteran Rick Story has agreed to step in. 
UFC officials announced the change overnight and the bout is expected to take place on the preliminary card.
UFC 160 takes place from the MGM Grand Garden Arena in Las Vegas and will be headlined by Cain Velasquez defending the UFC heavyweight title against Antonio “Bigfoot” Silva.
Story (15-6) is a 12 fight veteran of the UFC and has a UFC record of 8-4. After being on a six fight winning streak between 2009 and 2011, he has gone 2-3 in his last five fight and recently defeated Quinn Mulhern by TKO in the first round at UFC 158.
Pyle (24-8-1) is currently on a three fight winning streak and has won six of his last seven fights. His only lost in his last seven fights came at UFC 133 to Rory MacDonald, which he was defeated in the first round by TKO. During his recent winning streak, all of the wins have come by TKO/KO in the first round and he won the knockout of the night bonus for his win over Josh Neer at UFC on FX 3.
The current UFC 160: Velasquez vs. Silva II card is below:
Cain Velasquez (11-1) vs. Antonio Silva (18-4) – UFC Heavyweight Title Bout
Junior dos Santos (15-2) vs. Mark Hunt (9-7)
Ryan Bader (15-3) vs. Glover Teixeira (20-2)
TJ Grant (20-5) vs. Gray Maynard (11-1-1, 1NC)
Donald Cerrone (19-5, 1NC) vs. KJ Noons (11-6)
Rick Story (15-6) vs. Mike Pyle (24-8-1)
Khabib Nurmagomedov (19-0) vs. Abel Trujillo (10-4)
Nah-Shon Burrell (9-2) vs. Stephen Thompson (6-1)
Brian Bowles (10-2) vs. George Roop (13-9-1)
Dennis Bermudez (10-3) vs. Max Holloway (7-1)
Colton Smith (3-1) vs. Robert Whittaker (10-2)
Estevan Payan (14-3, 1NC) vs. Jeremy Stephens (20-9)