"I think there are some arms down there," manager Mike Scioscia said, referring to Triple-A Salt Lake. "I'm not going to throw names out there. [There are] arms out there, moving forward, ready to give us a little more depth now.
"I'm not sure if some of those guys are ready to move into a prominent role, but you never know. We'll keep some of the guys really pitching well in that bubble to help us win games."
Sean O'Sullivan, who won his first three starts with the Angels and was 3-2 with a 6.60 ERA in nine games, could slide into a long relief role. He's 6-4 with a 5.56 ERA in 13 games at Salt Lake.
Right-hander Rich Thompson, who has appeared in 12 games for the Angels with a 5.40 ERA, has been lighting it up at Salt Lake and figures to add firepower to the beleaguered bullpen.
Thompson has 49 strikeouts against only 11 walks in 41 1/3 innings in the Pacific Coast League, while his ERA is 3.05 and his record is 3-1 in 28 appearances.
Rafael Rodriguez, sent down on Saturday to make room for Scott Kazmir, has a 1.80 ERA in 19 games at Salt Lake, striking out 19 with seven walks in 30 innings. For the Angels, Rodriguez has a 6.26 ERA in 27 1/3 innings.
Bobby Mosebach, who appeared in three games for the Angels with a 7.71 ERA, is 2-2 with a 2.57 ERA at Salt Lake in 35 innings, striking out 24 with 14 walks.
Reggie Willits' versatility in the outfield and as a late-innings weapon make him a clear call-up candidate, along with versatile Sean Rodriguez and Brandon Wood, both of whom excelled in limited opportunities this season with the big club.
Terry Evans and Freddy Sandoval have Major League experience and could be summoned from Salt Lake.
Catchers Bobby Wilson and Ryan Budde are available to provide depth behind Mike Napoli and Jeff Mathis.
"We'll have some guys come up on Sept. 1, and some more later," Scioscia said, meaning after the Minor League playoffs.
Lyle Spencer is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.