Pettis injured, but title fight still on

UFC lightweight champion Anthony Pettis has suffered a knee

injury, although he is still expected to participate as the

headliner on the Dec. 14

UFC

On FOX 9 card against challenger Josh Thomson.

UFC president Dana White confirmed the news to FOX Sports on

Saturday after the

href="http://msn.foxsports.com/ufc/story/belfort-kos-henderson-110913"

target="_blank">UFC Fight Night: Belfort vs. Henderson

event.

“He’s going to fight,” White said. “For

sure.”

White did not specify Pettis’ injury, but said Pettis has

spent the last two days in Las Vegas, seeing Dr. Steven Sanders, an

orthopedist at Bone & Joint Specialists. After examining

Pettis, Sanders informed him that no surgery would be necessary to

address his problem.

Pettis has had knee trouble before,

href="http://msn.foxsports.com/ufc/story/ufc-pettis-injury-will-sideline-him-for-ufc-163-061413"

target="_blank">missing a scheduled UFC 163 match with Jose

Aldo. Instead, he moved to UFC 164 and

href="http://msn.foxsports.com/ufc/gallery/ufc-164-benson-henderson-vs-anthony-pettis-photos-083113"

target="_blank">defeated Ben Henderson to win the belt. It is

unclear if the injury is a recurrence or something new.

The charismatic and popular 26-year-old champion is 17-2. The

UFC On FOX 9 would mark his first attempted title defense. Former

Strikeforce titleholder Thomson was moved into the slot after true

top contender T.J. Grant was ruled out due to lingering

concussion-related issues. Thomson knocked out Nate Diaz in his UFC

debut in April.