34-year old running back Ricky Williams has retired from the NFL.  He played in 16 games (0 starts) for the Ravens last year in which he carried the ball 108 times for 444 yards (4.1 ypc) with 2 TD runs.  He also caught 13 passes for 83 yards (6.4 avg) last season.  Williams played in 147 games (84 starts) in his 11 years in the NFL and he carried the ball 2,431 times for 10,009 yards (4.1 ypc) with 66 TD runs.  He also caught 342 passes for 2,606 yards (7.6 avg) with 8 TD grabs in his NFL career.  Williams finishes his NFL career #26 in league history in rushing yards (10,009) and tied for 32nd with Fred Taylor in TD runs with 66 of them.  Williams doesn’t have to worry about taking drug tests anymore, so he will likely have a nicely buzzed retirement.