Clarke will make his first career big-league start Tuesday in Tampa Bay.
Clarke made his debut appearance in relief back in April, throwing three scoreless innings to record a save. His mediocre 4.40 career ERA in 38 starts for Triple-A Reno doesn't exactly make a great case for him claiming the role outright, but he could potentially be given the chance to do so with Zack Godley banished to the bullpen.