John Dodson undergoes surgery

UFC flyweight contender John Dodson is done for the year after undergoing surgery to repair a torn ACL on Wednesday.

Dodson (16-6) was expected to challenge Demetrious Johnson for the UFC flyweight title later this year, but will now miss extensive time due to the injury.

The Jackson-Winkeljohn MMA fighter told Fox Sports he expects to miss six to eight months of training and could potentially sit out an entire year before fighting again.

"I'm looking at six to eight months of me actually being out before I can start going back to the gym," Johnson told Fox Sports. "About a year (before a fight)."

Dodson's striking coach, Brandon Gibson, confirmed the fighter's injury to ESPN.com.

According to Gibson, Dodson initially suffered the injury while training for a fight scheduled last December against Scott Jorgensen. Dodson withdrew from that bout, but elected to attempt to rehab the knee instead of go under the knife.

Last month, Dodson stopped John Moraga in the second round on a UFC Fight Night card in Albuquerque, New Mexico. He finally accepted the option of surgery after the win.

"He eased back into it for the Moraga camp but it was never 100 percent," Gibson said. "After the fight, he was limping back on it and you could tell he aggravated it.

"I guess I'm just thankful that it didn't cost him the fight. He'll be out for a while, but I look forward to seeing him tear the division up when he gets back."