Guard Frankie Sullivan, one of the only returning players who made a major contribution last season, underwent successful surgery on his left knee Tuesday, Auburn announced in a release.

Sullivan, a rising junior, had the procedure done by Dr. James Andrews at St. Vincent's Hospital in Birmingham.

There is no timetable for a return and the severity of the injury is not known. An Auburn spokesman said the injury occurred recently.

"I feel for Frankie and the Auburn family," said head coach Tony Barbee, who left the recruiting trail to be with Sullivan for the surgery. "We were all looking forward to him having a big year.

"I'm a big believer in things happening for a reason even though we don't always understand why. We know Frankie will use his toughness and work ethic to come back 100 percent and will rejoin the team when he is fully healthy."

The 6-foot-1, 180-pound Sullivan averaged 12.7 points, 3.7 rebounds and 2.0 assists last season as the Tigers went 15-17. Of the team's top-five scorers last year, he is the only returner.

Sullivan scored a career-high 27 points in last year's SEC Tournament first round loss to Florida.