Pitching prospect Dan Klein had an anchor inserted into his right shoulder to repair a slight tear in his labrum and his right shoulder capsule loosened in a surgical procedure performed Tuesday by Yocum. Orioles director of player development John Stockstill said Klein could start a throwing program in mid-December and it's likely that he'll start next season in extended spring training. However, if all goes well, Klein could start pitching in games in late May or June. … Zach Britton allowed one run on three hits and a walk over five innings Tuesday night in a rehabilitation start for Triple-A Norfolk against Charlotte. Britton (left shoulder strain) could be activated from the DL in time to pitch Sunday or Monday … Right-handed reliever Luis Lebron, who had Tommy John elbow ligament-reconstruction surgery last year, was designated for assignment to make room for Dylan Bundy on the 40-man roster. … Orioles top prospect Manny Machado, the shortstop for Single-A Frederick, was ejected from Tuesday night's game for slamming his helmet.