Martin Perez (9-3) won his sixth consecutive start for the Rangers, who scored three runs in the fifth inning and held the Athletics to a solo run in the first inning.
Perez allowed one run on eight hits over seven innings. Alex Rios and Mitch Moreland added solo home runs to the Rangers' 13-hit attack.
Bartolo Colon (14-6) took the loss on four runs -- one earned -- on eight hits over five innings. Colon committed a critical fielding error in the three-run Texas fifth.
Jed Lowrie drove in Oakland's only run with a sacrifice fly in the first inning.