Mark Mulder's comeback attempt is over before it could really get started.

The veteran left-hander, who retired five years ago because of shoulder problems but decided to give it another shot this year after adopting a new throwing motion, ruptured an Achilles tendon during a workout with the Angels, the Los Angeles Times reported Saturday.

The 36-year-old Mulder signed a minor league contract in the offseason and had impressed the Angels before the injury, which occurred while doing ability drills before a throwing session in the bullpen.

Mulder, who has worked as an analyst with ESPN since 2011, had called it quits in 2008 after undergoing surgery for rotator cuff tears in 2006 and 2007 while pitching for the St. Louis Cardinals. He pitched only 11 innings in 2007 and 1 2/3 innings in 2008.

"I can handle this," Mulder said on Twitter. "But seeing my son in tears when he saw me in a boot and crutches and I told him I wasn't going to pitch, that was tough."

Mulder's best seasons came early in his career. He went 21-8 with a 3.45 ERA in 2001 and 19-7 with a 3.47 ERA in 2002 for the Oakland Athletics. He won at least 15 games per season from 2001 to 2005.