GREEN BAY, Wis. (AP) -- Packers linebacker Clay Matthews has been knocked out of Sunday's game against the Pittsburgh Steelers after appearing to reinjure his right thumb.
Steelers wideout Emmanuel Sanders was also knocked out with a right knee injury. Sanders, the team's second-leading receiver with 65 catches, had a 1-yard touchdown reception in the first quarter.
Matthews got hurt after sacking Ben Roethlisberger at the Packers 43 with about five minutes left in the second. Matthews appeared to be in pain as soon as he got up and ran to the sideline.
Teammates B.J. Raji and Mike Neal patted Matthews on the back as he was attended to on the bench before Matthews went into the locker room.
Matthews missed four games after hurting the thumb while recording a sack Oct. 6 against Detroit. He leads Green Bay with 7 1/2 sacks.
Inside linebacker Brad Jones also left the game for the Packers with an ankle injury. His return was questionable.
Pittsburgh also lost backup linebacker Terence Garvin to a left knee injury.