Ricky Williams, who will turn 35 before the 2012 season, says he will return to the Ravens for his 12th professional season.
"My body feels good and I know I'm going to train hard and so I'm excited about next year," Williams said.
"I've grown a lot, kind of falling into a new role and a new city and a new organization, and I've gotten better. And like everyone else, I feel like I have something to build on for next year."
Williams had career lows in carries (108) and rushing yards (444) after joining the Ravens last summer on a two-year contract.
He served a critical backup role to Ray Rice, who often said Williams was "the best thing that ever happened to me."
Ricky Williams To Return As Rice's Backup