ENGLEWOOD, Colo. — Denver center Tom Nalen had arthroscopic surgery on his left knee today and the Broncos expect him to be ready for training camp in July.

The 14-year veteran has played in 194 games, including 188 starts. Only two Broncos have played in more: kicker Jason Elam, now with the Falcons, who played in 236 games, and retired quarterback John Elway, who played in 234.

The Broncos have a veteran backup in Casey Wiegmann, a 13-year pro signed in the offseason.

Rookie center Cory Lichtensteiger, a fourth-round draft pick out of Bowling Green, is recovering from surgery for a torn labrum in his right shoulder.

Last year, Nalen suffered a season-ending biceps injury in Game 6 against San Diego.