"They've developed a real good rapport, and with today being a day game after a night game, I probably would have given Castro a day off, anyway," said manager Bo Porter. "It just so happens that it aligns up to where Corporan can catch Harrell."
In Spring Training, Corporan caught the majority of Harrell's starts.
Richard Dean is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.