Kansas City Chiefs QB Patrick Mahomes says he's cleared concussion protocol, cleared to play Sunday

KANSAS CITY, Mo. --  Kansas City Chiefs quarterback  Patrick Mahomes said Friday he's out of the concussion protocol and cleared to play in Sunday's AFC Championship Game against the Buffalo Bills at Arrowhead Stadium.

Chiefs coach Andy Reid said Mahomes took all of the snaps in Wednesday's practice and a majority of them on Thursday.

Mahomes was knocked out of last week's divisional-round playoff win over the Browns with symptoms of a concussion after he was tackled hard on a running play. 

Three other key Chiefs players who have been fighting injuries were also present for the start of Friday's practice: wide receiver Sammy Watkins (calf), running back Clyde Edwards-Helaire (hip, ankle) and cornerback Bashaud Breeland (concussion, shoulder).

Coach Sean McDermott said the Bills were preparing for Mahomes to play.

"I guess at the beginning of the week we weren't quite sure, and we really won't know, I guess,'' McDermott said. "It's probably trending in that direction, so that's what we're anticipating.''

ESPN's Mike Reiss contributed to this report.