The Packers have gone 4-1 this season without Clay Matthews in the lineup. Now, they're going to have to improve that record to 5-1 if they want to advance in the playoffs. Packers coach Mike McCarthy announced that Matthews won't be playing in this weekend's wild-card game against San Francisco due a thumb injury.

Matthews originally injured the thumb in a Week 5 win over the Lions and underwent surgery shortly thereafter. After surgery, Matthews missed the Packers next four games. Matthews reinjured the thumb in Week 16 against Pittsburgh and was unable to play in the Packers regular season finale against Chicago.

"I really don't have a feel for Clay as far as where he is. I really haven't even seen him to talk to him," McCarthy said, via ESPNWisconsin.com. "You're always cautious with players after surgery. Right now he's out for this week and that's really what we're focused on."

Despite playing in only 11 games this season, Matthews leads the team in sacks with 7.5 and is tied for the team lead in forced fumbles with three.