Keuchel (2-0) allowed two hits in six innings, struck out seven and walked three, throwing a season-high 105 pitches. Angels batters struck out a season-high 13 times, and Los Angeles was unhappy with the strike zone of plate umpire Paul Nauert. Richards, who had left knee surgery last August, had been on an injury rehabilitation assignment with Triple-A Salt Lake. Astros: RHP Josh Fields (groin) impressed in his last outing with Triple-A Fresno, and manager A.J.