Sources told ESPN NFL Insider Adam Caplan that Scifres will have surgery to repair the damage, missing at least the final three regular-season games and, if San Diego qualifies for the postseason, the wild-card round. Coach Mike McCoy said the team still is evaluating whether Scifres will be placed on the season-ending injured reserve list.
A 12-year veteran, Scifres hasn't missed a game due to injury since entering the league in 2003.
"We'll see how the week goes with his injury and decide what we are going to do there," McCoy said.
Scifres was hurt in the second quarter of the Chargers' 23-14 loss to the New England Patriots on Sunday night when Brandon Bolden ran into him while blocking a punt. Scifres was flipped over on the play and remained on the field while San Diego's medical staff attended to him. He had to be carted off the field.
Nick Novak served as San Diego's punter with Scifres out.
"That was terrible," Novak said about the play. "I felt horrible for him. That's the hardest hit I've seen on a punter in a while. But our mentality is always next man up, and just step in there and do it. Do your job. No excuses."
McCoy was pleased to see Bolden apologize to Scifres after the play.
"This is a physical game," McCoy said. "But it meant a lot to me to see someone act the way they did, when they came up to him and apologized, saying 'I'm sorry, and I didn't mean to do that.' That showed a lot of class on New England's part for him to do that."
Scifres also serves as San Diego's holder on field goals. Safety Eric Weddle took over those duties Sunday.
The Chargers plan to bring in a handful of punters for workouts on Tuesday. According to Caplan, some of the best available punters on the market include Chris Kluwe, Brian Moorman, Adam Podlesh, Sav Rocca, Mat McBriar, Zoltan Mesko and T.J. Conley.