The Phillies promoted Pivetta to Triple-A Lehigh Valley on Friday, Greg Joyce of the Express-Times reports.
Pivetta was acquired from the Nationals last season in the Jonathan Papelbon trade. He was 11-6 with a 3.41 ERA and a 111:41 K:BB in 124 innings for Double-A Reading this season. He struggled with walks at Double-A last season, but has made some solid strides in that area this year. The jury is still out if he will stick in the rotation. If not, he has the stuff to be a solid reliever in the majors.