Atlanta will start Holmes against the Brewers on Monday, Justin Toscano of The Atlanta Journal-Constitution reports.
The right-hander has worked out of the bullpen since being called up by Atlanta in mid-June, though he's primarily worked in long relief and has covered at least three frames in five of his 10 outings. Holmes threw a season-high 52 pitches in his previous appearance Wednesday, so he should be able to provide some length even if it's not quite a full starter's workload.