Delcarmen, 30, has spent the most time in the Majors, but hasn't pitched in the big leagues since 2010. He caught on with the Red Sox in '05 and played in Boston until '10, when he was traded to Colorado. In six years in the Majors, Delcarmen is 11-8 with a 3.97 ERA over 292 2/3 innings in 298 appearances.
Delcarmen spent the last two seasons in the Minors, going 3-5 with a 4.42 ERA in 39 appearances last season for Triple-A Scranton/Wilkes-Barre in the Yankees' system. He averaged more than a strikeout per inning, but also walked 36 in 57 innings.
Delaney, 28, put up strong numbers in Triple-A over the past two seasons. He went 3-1 with a 2.29 ERA over 63 innings in 44 games for Miami's New Orleans affiliate last season. He was even better in 2011 for Tampa Bay's Triple-A club in Durham, going 4-2 with a 1.86 ERA, 13 saves and a 3.35 strikeout-to-walk ratio.
Delaney has only pitched six innings in the Majors, most recently giving up six runs over five innings for the Rays in 2011, but he owns a career 29-22 record and 2.71 ERA in the Minors.
Pettit, 28, owns a career .280/.364/.452 batting line with 56 homers and 338 RBIs in six Minor League seasons. He bounced back from a rough 2011 campaign by hitting .282/.354/.454 between Double-A Jackson and Tulsa and Triple-A Colorado Springs last season. He played all three outfield positions as well as first base and designated hitter in 2012.
Pettit's brief time in the Majors came with the Angels in 2009 and '11. He recorded two hits and a strikeout in seven plate appearances over 10 games.