Perez allowed six hits and three walks, striking out six, before turning it over to the bullpen. The A's were 1-for-10 with runners in scoring position against Perez and four relievers.
A's left-hander Sean Manaea struck out a career-high 10 batters in 5 1/3 innings, but he gave up six runs (five earned), despite allowing just three hits. Gallo hit a three-run home run in the second, and Manaea was charged with three more runs in the sixth. The Rangers loaded the bases when Nomar Mazara was hit by a pitch, Rougned Odor reached on a one-out error by first baseman Ryon Healy and Ryan Rua drew a walk.