The Phillies promoted Rodriguez to Triple-A Lehigh Valley on Tuesday, Mike Drago of the Reading Eagle reports.
A roster spot opened up with the promotion of Luis Garcia to Philadelphia. Rodriguez was 7-0 with a 2.57 ERA and a 41:16 K:BB in 49 innings for Double-A Reading and held lefties to a .197 average. He could get a look in the Phillies' pen in September.