Sonny Gray was scratched from his Opening Day start for the Oakland Athletics because of food poisoning that sent him to the emergency room for intravenous fluids Monday morning.

Gray was pushed back to Wednesday, while Rich Hill took the mound against the Chicago White Sox in his teammate's place.

"Obviously, if he's not pitching, it was fairly severe," Bob Melvin said. "Like you would expect, he wanted to do everything he could to pitch. It just doesn't make any sense to do that. You just refocus. It is one out of 162, yet this is one, it's a first look, it's a first impression. You want to put on a good show for your fans, and everybody wants to watch Sonny Gray pitch."