Running back Cadillac Williams, mounting a second straight comeback from serious knee surgery, will start at running back for the Bucs in their preseason game against the Dolphins Thursday night.

In announcing that news, coach Raheem Morris also revealed how he intends to use his running back rotation throughout the season. As will be the case on Thursday, Morris said the starter will get two series, followed by another back playing the next two series and a third getting a single series.

Asked if that would remain the case throughout the season, Morris replied, "if it works, that's what I'd like to do. I want to go into it with that thought." Morris left open the possibility that the rotation could be altered based on a particular back having a hot hand.

Williams sustained a torn patellar tendon in his left knee in December, this after tearing the one in his right knee in September 2007. His rehabilitation was much quicker than expected, but Morris opted not to play Williams in the first two preseason games.

His debut should answer any questions about his willingness to take punishment after a pair of such severe injuries, but Morris said Williams has not shied away from contact during padded practices and looks just as quick as he did during his 2005 season, when he was named Offensive Rookie of the Year.