Roupp will start Tuesday's game against the Brewers, Shayna Rubin of the San Francisco Chronicle reports.
It will be the first major-league start for Roupp, who fired 61 pitches over four scoreless relief innings in his last appearance Thursday versus the Diamondbacks. The righty has split time between the rotation and bullpen this season at Triple-A Sacramento, but he hasn't gone more than four frames in any outing in the majors and minors in 2024; therefore, he'll be relatively limited from a workload perspective.