Waldrep could start Thursday's game against the Cardinals if he isn't needed out of the bullpen Wednesday, Mark Bowman of MLB.com reports.
Reynaldo Lopez is starting Wednesday's game, and if he's able to go at least 4-to-5 innings, Atlanta will likely go with Waldrep as its starter for Thursday's series finale. If the right-hander has to pitch in relief Wednesday, however, Grant Holmes could draw Thursday's start. Waldrep had surgery to remove loose bodies from his right elbow back in February, but he threw 55 pitches over two scoreless relief innings during his season debut for Atlanta last week. His highest pitch count in five rehab starts was 71, so the righty isn't fully stretched out yet.