Bulger made his spring debut on Monday in a save situation against the Athletics and got the out that wrapped up a one-run victory.
"We're seeing some strides with Bulg," Angels manager Mike Scioscia said. "He has an electric arm when he's feeling good. Last year he had some issues with his health, and we're seeing him get back on track."
Bulger, whose mid-90s fastball is complemented by a big breaking ball, was limited by shoulder issues to 25 appearances and a 4.88 ERA in 2010. The 6-foot-4 right-hander was the club's most durable reliever in 2009, appearing in 64 games with a 6-1 record and 3.56 ERA.
"I'm full go," Bulger said, "letting it go. I'm not having any problems. I hurt the shoulder at the end of May, came back to pitch the last month and then took a month off. I did my exercises and started throwing again, and I'm feeling great.
"I think I can do even better than . Towards the end of that season, I was starting to pitch to my potential. There's a lot of competition here, a lot of great arms. But I feel good if I can pitch to my ability."