Rousimar Palhares is out of his fight with Yushin Okami after suffering an injury in training.
The Brazilian middleweight suffered damage to his knee and will be sidelined for some time, his coach Murilo Bustamante told Fighters Only today.
He may even require surgery to fix the damage, which is likely to be ligament-related.
â€śHe got an injury in his knee during the camp. Bad luck. He is out of action for while. After next two weeks we will know for sure if he'll need a surgery,â€ť Bustamante said.
Palhares is coming off a loss to Alan Belcher in May. The first-round TKO finish was an upset as Palhares had been on a three-fight winning run going into the bout and was the favourite to win by way of one of his trademark leglocks.
Prior to the fight, Belcher told everyone that he was more than willing to match jiu jitsu skills with Palhares. He did, and got the better of him, before putting him on his back and finishing him with elbows and punches.
Okami is coming off back-to-back losses, having been stopped by Anderson Silva at UFC 134 and then stopped again at UFC 144 when Tim Boetsch managed a come-from-behind rally to take him out in the third round.
Now Okami is set to face the unknown Buddy Roberts at UFC 150. Roberts won his UFC debut last month with a unanimous decision over fellow debutant Caio Magalhaes, but it was a fairly lacklustre affair and certainly didnâ€™t drive Robertsâ€™ name home to the fans.
UFC 150 takes place August 11 in Denver, Colorado and will be headlined by a lightweight title rematch between Ben Henderson and former champion Frankie Edgar, who lost the title to Henderson by decision at UFC 144.