The New England Patriots began preparations for the Buffalo Bills down two defensive starters.

Outside linebacker K’Lavon Chaisson and safety Jaylinn Hawkins did not take the field for Wednesday’s practice in Foxborough. But inside linebacker Jahlani Tavai, who spent September on injured reserve, did as his 21-day return window opened.

Here’s the first injury report heading into Sunday’s 8:20 p.m. ET AFC East kickoff at Highmark Stadium.

DID NOT PARTICIPATE

Patriots • LB K’Lavon Chaisson (knee) • S Jaylinn Hawkins (hamstring)

Bills • LB Dorian Williams (knee)

Off New England’s edges, Chaisson stands with 2.5 sacks through the initial month of the regular season. The March arrival had recently been listed as questionable due to a knee injury after going from a non-participant to

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