The Kansas City Royals have put pitcher Zack Greinke on the injured list for at least 15 days after the right-hander strained his right forearm. Greinke complained of tightness in his arm after his start Sunday. He allowed five runs in four innings against the Twins. He is now 0-4 with a 5.05 ERA this season. But don’t worry, there’s no reason to panic. There are ways to replace Greinke in the meantime.