Ricky Williams has decided to retire after 11 seasons in the NFL. "The NFL has been an amazing page in this chapter of my life," Williams said in a statement. "I pray that all successive adventures offer me the same potential for growth, success and most importantly fun. I want to thank all my fans, teammates, coaches and supporters for the strength they've given me to overcome so much." Williams briefly retired once before, missing the 2004 season. He was facing a four-game suspension for violating the league's drug policy before he shockingly announced he was leaving the game.