When the Patriots travel to Orchard Park to face the Bills on Sunday, they won’t have one of their starters along the defensive front with them.

K’Lavon Chaisson has been ruled out of Sunday’s game with a knee injury, the team announced Saturday. The outside linebacker missed the team’s Wednesday and Friday practices, making a limited appearance at Thursday’s practice.

In his first season with the Patriots, Chaisson has become a bit of an unexpected key contributor. He’s started all four games to this point, playing opposite of Harold Landry as the Patriots’ two primary edge rushers. Chaisson has also played 68.3 percent of the Patriots’ defensive snaps, which is the seventh-highest among all the team’s defenders, per Pro Football Reference.

Chaisson has been quite effective in his expa

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