Fedroff is a 2008 7th-round pick who has spent the last four years at Double-A or Triple-A without a big league appearance. Now 26, the outfielder has struggled to a .242/.334/.306 line this season at Triple-A Columbus. Last year, he had impressed with a .316/.394/.485 triple slash across 543 plate appearances in the upper minors.
Diaz, meanwhile, is a 24-year-old shortstop who has seen only seventeen big league plate appearances. In his first full season at Triple-A this year, Diaz has hit .242/.317/.348 to go with eight long balls. He is not much of a threat to steal, and has struck out at or above a 20% clip.