The Diamondbacks have traded right-hander Jeremy Hellickson to the Phillies for right-handed pitching prospect Sam McWilliams.

The 28-year-old Hellickson went 9-12 with a 4.62 ERA in 27 starts after being traded to Arizona from Tampa Bay last offseason. He was the AL Rookie of the Year in 2011 and won a Gold Glove in 2012.

Hellickson is 49-48 with a 3.94 ERA in 142 games in six big league seasons.