SAN DIEGO -- Safety Eric Weddle has been an iron man for the San Diego Chargers.

Weddle led San Diego's defense by playing 961 snaps last season. Since 2008, Weddle's played an average of 937 snaps during the regular season.

But those numbers could come to an end soon. Weddle suffered a groin injury toward the end of Sunday's 27-20 loss on the road to the Green Bay Packers and he could barely walk after the game.

Weddle played in 44 defensive snaps against Green Bay. He walked with a noticeable limp in the locker room at Chargers Park on Monday.

"I'm just trying to get my feet under myself," Weddle said. "It's a long week, and a lot of stuff can happen. So I'm just going to get the guys ready and try to get myself ready."

Along with Weddle, starting strong safety Jahleel Addae also had to leave Sunday's game with a back issue, leaving the Chargers with only two healthy safeties in Jimmy Wilson and Darrell Stuckey.

The Chargers waived offensive lineman Michael Ola on Monday, so they have an open roster spot and could promote safety Adrian Philips from the practice squad to the active roster this week for improved depth.

Wilson knows he has to be ready for an expanded role with Weddle and Addae dinged up.

"That puts a lot on my table and my preparation this week to make sure that our defense doesn't miss a beat," Wilson said. "I need to sit down with him [Weddle] and watch some of this film, because I know he's such a professional and he'll be in here studying on the Raiders like old times."

Weddle is the only safety in the NFL named first- or second-team All-Pro for five straight seasons.

The 30-year-old safety is in the final year of his contract, and is scheduled to make $7.5 million in base salary in the final year of a five-year, $40 million deal.

With Manti Te'o missing last week's game because of an ankle injury, Weddle served as the person wearing the radio headset in his helmet and making the defensive play calls.

"He's as smart as the come on the defensive side of the football," Chargers head coach Mike McCoy said about Weddle. "He sees so many things before they happen. And that's with experience

"So you're not going to have just one player do that. If for some reason he can't play, it will be other guys by a committee that will have to pick up for him."