Starter Zach Eflin pitched four shutout innings, allowing two hits and striking out four without a walk. ROCKIES 2, MARINERS 1Kyle Freeland allowed three hits in four shutout innings in his second start for Colorado, striking out four. Seattle's Marco Gonzales threw four shutout innings in his second start, allowing two hits while striking out four. Martín Pérez made his second start, allowing two hits and a walk in four scoreless innings. ATHLETICS 5, REDS 2 (7)Oakland lefty Sean Manaea struck out four in three innings, allowing one run and three hits.

Oakland Athletics' Stephen Piscotty celebrates with teammates after a game-ending grand slam against the Texas Rangers during the ninth inning of a baseball game in Oakland, Calif., Tuesday, Aug. 4, 2020. (AP Photo/Jed Jacobsohn)OAKLAND, Calif. Stephen Piscotty hit Oaklands second walkoff grand slam of the year and the Athletics beat the Texas Rangers 5-1 Tuesday night for their fourth straight win. Volquez retired Robbie Grossman on a popup before Piscotty hit a first-pitch drive over the wall in center to match the opening night 10th-inning slam by Matt Olson against the Angels. The 22-year-old lefty was the youngest As pitcher to start a game since Brett Anderson in 2010 and lived up to the hype. He overpowered the Rangers at times, striking out Joey Gallo on a 96 mph to end the first.