Diamondbacks reinstate Zac Gallen to start vs. A’s, option Brandon Hughes

PHOENIX — The Arizona Diamondbacks reinstated ace starting pitcher Zac Gallen from the 15-day injured list to take the mound Saturday against the Oakland Athletics. Arizona optioned left-handed reliever Brandon Hughes after he allowed three home runs in the ninth inning of Friday’s 9-4 loss. Gallen exited two batters into a start at the New York Mets on May 30 with a left hamstring strain. He landed on the IL a day later and misses nearly a month. The D-backs were already pushing into their starting pitching depth with Eduardo Rodriguez and Merrill Kelly on the injured list with shoulder...