San Francisco 49ers left guard Mike Iupati had shoulder surgery and is unlikely to participate in OTAs, according to the Sacramento Bee. It's considered a minor procedure and he's expected to be at full strength for training camp.
The extent of Iupati's shoulder injury is unknown, but it has apparently been an issue for some time. He first popped up on the injury report in Week 14 and stayed there for the rest of the regular season and postseason, although he never missed a game. He last had shoulder surgery back in 2007 at Idaho.
Iupati has started every game in his three years with the 49ers and played 98 percent of their snaps last season. He was a Pro Bowler and All-Pro selection in 2012. The 49ers started talking to him about a contract extension, but there's no timetable on a new deal. He is a free agent after 2014.