Revere, 24, was a first-round draft pick by the Twins in the 2007 MLB Draft. He made his MLB debut in 2010 and has been an impact player with his speed and defense. Revere hit .294 last season with 40 stolen bases and a 2.4 WAR; he has yet to hit a home run in his MLB career.
Worley, 25, was a third-round pick of the Phillies in 2008. He finished third in NL Rookie of the Year voting in 2011, but regressed a bit in 2012. Last season Worley went 6-9 with a 4.20 ERA and a 1.511 WHIP.
May, 23, was listed as the Phillies' top prospect, but didn't fare as well last season in Double-A as he had done in Single-A. In Reading last year, May went 10-13 with a 4.87 ERA, 151 strikeouts, and 1.450 WHIP.