Shoulder surgery for guard Connolly

INDIANAPOLIS -- Patriots guard Dan Connolly, who played and started in 14 games during the 2012 season, recently underwent right shoulder surgery, a league source confirmed. It's unclear when the injury was sustained but it isn't expected to impact his 2013 season.

The news was first reported by Shalise Manza Young of the Boston Globe.

The 30-year-old Connolly emerged as the Patriots starting center during the 2011 season when longtime starter Dan Koppen went down with an ankle injury than landed him on injured reserve. After right guard Brian Waters failed to report to training camp during the 2012 season, the versatile Connolly was shifted from center to guard, with Ryan Wendell elevated from a reserve role to take over as the team's center.

Connolly's strong 2011 season earned him a three-year contract last offseason.