Kansas City Royals' Kelvin Herrera works against the Oakland Athletics during a baseball game Friday, June 26, 2015, in Oakland, Calif. (AP Photo/Ben Margot)
Kansas City Royals' Kelvin Herrera works against the Oakland Athletics during a baseball game Friday, June 26, 2015, in Oakland, Calif. (AP Photo/Ben Margot) Ben Margot AP
Kansas City Royals' Kelvin Herrera works against the Oakland Athletics during a baseball game Friday, June 26, 2015, in Oakland, Calif. (AP Photo/Ben Margot) Ben Margot AP