Bio: Mack, the Yankees' selection in the 13th round of the 2009 draft, is a 25-year-old ou totfielder from Tulare, Calif., who played his college ball at the University of South Carolina. While a Gamecock, Mack was teammates with now-former Yankees farmhand Nick Ebert, as well as Jackie Bradley, Jr., Boston's fourth choice from the most recent draft. 

In three seasons in the system (two full), Mack has accumulated a .274/.351/.442 slash line, to go with 58 doubles, 27 HRs and 144 RBIs.

Last year: Mack was promoted to Double-A on May 27, and lasted nearly two months, with a spell on the disabled list mixed in. Mack held his own with the Thunder, hitting just .248, but getting on base at a .357 clip. He socked four home runs and drove in 16 before being bumped back to Tampa on Aug. 2.

He also posted a wOBA of .345 and a wRC+ of 112 during his time with Trenton.

What's Next: Mack split last season between Tampa and Trenton, and will more than likely return to Waterfront Park this season, probably in left field, where he'll line up with Melky Mesa and Zoilo Almonte in what should be an interesting and powerful group.