Rougned Odor also homered, Mitch Moreland, Shin-Soo Choo, Will Venable drove in runs and Prince Fielder ended an 0-for-20 streak as the Rangers magic number fell to eight.
Josh Reddick and Eric Sogard homered and Carson Blair drove in a run for the A’s, who lost their fourth straight. Reddick committed two errors in the same game for the first time in his career. Sogard ended a 457-at bat homerless streak.
Lewis (17-8) became the Rangers’ first 17-game winner since Scott Feldman won 17 in 2009. He’s already set a career high for wins. Lewis walked Brett Lawrie leading off the third, ending a streak of 66 consecutive plate appearances without issuing a free pass. He gave up two runs on five hits, walking two and striking out three.
Felix Doubront (3-3), who started the season with the Toronto Blue Jays, lasted 4 2-3 innings, allowing seven runs on eight hits. He walked two and struck out four.
Billy Burns tripled with two outs in the fifth, which was the A’s 41st triple, setting an Oakland record (40 in 1968).