Yarbrough will start Wednesday against the Braves, Marc Topkin of the Tampa Bay Times reports.
As expected, Yarbrough will step into the starting rotation on at least a short-term basis with Yonny Chirinos (elbow) expected to miss around a month. The 26-year-old held his own during the team's "bullpen day" Friday, tossing five scoreless innings while allowing just one hit and striking out four. While he owns a respectable 3.33 ERA through 24.1 innings this season, Yarbrough will have his hands full against a difficult Braves lineup.