Bills release RB K. Williams after one season

PITTSFORD, N.Y. -- The Buffalo Bills have waived second-year running back Karlos Williams, the team announced Saturday.

The move comes after the NFL announced in July that Williams was suspended for the first four games of the regular season for a violation of the league's substance-abuse policy. Williams can serve the suspension as a free agent if he is not claimed off waivers or signed by another team.

Karlos Williams averaged 5.6 yards per carry and scored nine touchdowns as a rookie last season.Williams, 23, began training camp on the active/non-football illness list after he reported to minicamp in June out of shape. Williams, who attributed his weight gain to his pregnant fiancee's food…