ORCHARD PARK, N.Y. (AP) Buffalo Bills defensive tackle Kyle Williams will undergo surgery on his left knee and miss the rest of the season.
Williams said Friday he will need surgery for a meniscus injury. The 10-year veteran has been out since suffering the injury against the Cincinnati Bengals in Week 6.
Williams, 32, hoped to play through the injury, but was not making progress after six weeks of rest.
''It's been tough,'' Williams said. ''It was something that we knew was going to have to be addressed sooner or later, and we kind of hoped against hope that I could get through and that I could respond and I could play with it and wait until after the season.''
Added coach Rex Ryan: ''It's unfortunate because nobody's tried to get out here more than he has. It just hasn't responded.''
Williams is Buffalo's longest-tenured player and a four-time Pro Bowler. He expects the rehabilitation process to take a few months and said he has no plans to retire.
''I'm going to give you what I've got until I can't,'' Williams said. ''Up until this point, I've felt pretty good this year. I actually felt healthy, really good. It's just kind of the price of doing business sometimes. It's the nature of this league. You've got guys who come back and play, so that's what my plan is.''
Williams finishes the season with 14 tackles and a sack in six games.
The Bills (5-5) will also be without defensive end Mario Williams (foot) for Sunday's game against Kansas City (5-5). Ryan said Friday that Williams may miss more than one game, but will return before the end of the season.
Quarterback Tyrod Taylor (right shoulder) was limited at practice Friday, but is expected to play.
Guard John Miller (ankle) and receiver Marcus Easley (concussion) are out.
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