Kyle Williams was carted off the field in Sunday's game against the Bengals with an apparent knee injury. Timothy T. Ludwig USA TODAY Sports

The injuries continue to pile up for the Buffalo Bills this season. After Sammy Watkins left the game, the Bills lost another important player on the other side of the ball.

Defensive tackle Kyle Williams was carted off the field in the fourth quarter of the Bills' 34-21 loss to the Cincinnati Bengals on Sunday, and was unable to return. The severity of the injury has not yet been confirmed, but it continues an unfortunate injury trend for the Bills in 2015.

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According to Sal Capaccio of WGR550, the initial diagnosis is a PCL injury, which shouldn't require surgery. Capaccio reports that it's typically a three-to-four week injury, though Williams will undergo further tests on his knee.

Williams joins a long list of Bills injuries that includes Watkins, Tyrod Taylor, Percy Harvin, and Aaron Williams, just to name a few. Kyle Williams has recorded 14 tackles in six games this season, while also adding a sack to his credit.

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