Los Angeles Angels right-hander Garrett Richards is scheduled to pitch in a major league regular-season game for the first time since May 1 when he takes the mound against the Athletics in Oakland on Wednesday night. Richards was diagnosed with an ulnar collateral ligament tear in his right elbow last spring, five days after he was pulled in the fourth inning of a 9-6 victory at the Texas Rangers because of dehydration and cramping. In his last spring training appearance March 31, he allowed one hit over four innings with three strikeouts and one walk against the Los Angeles Dodgers.