Alex Colome and four relievers combined on a four-hitter, David DeJesus drove in two runs and the Tampa Bay Rays beat the A's 3-0 on Thursday night to take sole possession of first place in the AL East.
Colome (3-1) gave up four hits over five innings. Steve Geltz, Kevin Jepsen, Jake McGee and Brad Boxberger, who pitched the ninth for his 12th save, all threw an inning to complete a six-hitter.
DeJesus had an RBI double in the fourth and hit a solo homer during a two-run seventh that put Tampa Bay up 3-0.
The Rays (23-19), who took a half-game lead over the idle New York Yankees, have held opponents to two or fewer runs in 21 of 42 games this season.
Jesse Chavez (1-4) allowed three runs and five hits in six-plus innings for Oakland, which has lost 13 of 15. It's the first time the A's (14-29) have been 15-games under .500 since Sept. 27, 2011.
Brandon Guyer scored the other seventh-inning run after hitting a single, stealing second and third, and scoring on Bobby Wilson's groundout that hit reliever Edward Mujica around the right hand and forced him from the game.
Billy Burns opened the game with a triple, but was left stranded after some questionable baserunning. He didn't try to advance after tagging up on Marcus Semien's fly to center that appeared deep enough for him to score on and then nearly got doubled up on Josh Reddick's grounder to first.
Oakland also failed to score in the fourth after loading the bases with two outs when Sam Fuld, mired in a 3-for-48 slide, hit a grounder.
The Athletics put two on with two outs in the ninth before Brett Lawrie struck out.
NOTES: OF Coco Crisp (neck) will see a specialist Friday. … INF-OF Ben Zobrist (left knee) will join Triple-A Nashville Friday and could return early next week. … LHP Sean Doolittle (shoulder) will throw an inning Friday for Nashville. … LHP Eric O'Flaherty (shoulder) will have his first bullpen session Saturday. … LHP Drew Pomeranz had a cortisone shot in the AC joint of his throwing shoulder and could shortly resume throwing. … LHP Matt Moore (elbow surgery) is scheduled to throw two innings in his first extended spring training game Saturday.