Atlanta optioned Waldrep to Triple-A Gwinnett on Friday.
Waldrep looked rusty in two starts and one relief appearance during his first stint with the big club this season, posting an 8.44 ERA, 2.16 WHIP and 9:10 K:BB over 10.2 innings. The young right-hander could eventually get another chance in the Atlanta rotation after the All-Star break, but he'll try to sharpen up at Gwinnett first. JR Ritchie is entering the rotation in Waldrep's place.