Atlanta selected Perez's contract from Triple-A Gwinnett on Friday.
Perez re-signed with Atlanta earlier this week after electing free agency, and he's slated to start Friday's game on the road in Philadelphia. The veteran left-hander holds a 3.14 ERA, 0.91 WHIP and 6:4 K:BB across 14.1 innings during his time in the majors this season. Perez should make at least a couple more starts but will likely lose his rotation spot once Spencer Strider (oblique) is ready to return around the beginning of May.