Marcus

Gwyn

The 29-year-old Gwyn will be making his major league debut after posting a 2.78 ERA in 37 relief appearances for Salt Lake. He’ll be tried as a middle reliever.

A little bullpen depth with Scot Shields currently struggling isn’t a bad idea for the Halos, but don’t expect to see Gwyn used in any key situations.

With Erick Abyar coming off the DL, the Halos needed to farm someone out. Gwyn had made just one appearance since his recall on July 24, tossing one shutout inning on July 29, so clearly he wasn’t in great demand by the Angels.

Gwyn, who made his major league debut last month, will pitch in middle relief.

The Angels used Gwyn us last night, letting him go three innings and give up four runs -- two earned -- in the rout of the Yankees.

Waechter made 13 minor league starts last season after returning from major shoulder surgery, and Nelson missed the whole year after having his shoulder operated. If healthy, Waechter could get a look at the back of the rotation at some point. He was 14-25 with a 5.62 ERA in 54 starts and six relief appearances for the Rays between 2003 and 2006.

Hernandez had a decent enough spring, posting a 4.15 ERA in 13 innings, but he’s still clearly fallen behind Chris Volstad on the depth chart. He’ll be a part of the rotation at Triple-A Albuquerque.