Owings Mills, MD (AP) - Baltimore Ravens running back Ricky Williams says he's retiring from football.

The 34-year-old Williams still has a year left on his contract with Baltimore, but told the team Tuesday that he does not intend to play next year.

After winning the Heisman Trophy with Texas, Williams broke into the NFL in 1999 with the New Orleans Saints. He had five 1,000-yard rushing seasons over 11 years.

This season, his first in Baltimore, he ran for 444 yards and scored two touchdowns as a backup to Ray Rice.

Williams led the NFL in 2002 with 1,853 yards rushing with the Miami Dolphins and made the Pro Bowl that season.

He retired previously before the 2004 season when facing a four-game suspension for violating the league's drug policy. He returned in 2005.