SEATTLE -- Yoenis Cespedes hit a two-run homer that broke a scoreless tie in the eighth inning, lifting the Oakland Athletics over the Seattle Mariners 3-0 Sunday.
Cespedes pulled a 2-2 slider from Charlie Furbush (0-1) into the left-field bullpen. Cespedes' second homer of the season came after Jed Lowrie drew a leadoff walk.
Josh Donaldson added a solo home run in the ninth, his third, off Lucas Luetge.
A's starter Scott Kazmir pitched two-hit ball for six innings, striking out nine without a walk.
Dan Otero (2-0) retired two batters in the seventh. Luke Gregerson worked the eighth and Sean Doolittle allowed one hit in the ninth for his first save.
Chris Young made his first start since Sept. 9, 2012, while with the New York Mets. Troubled by shoulder problems all last season, he went to spring camp this year with the Nationals, was released and signed during the last week of training camp by Seattle.
Young pitched six shutout innings, giving up four hits. He walked three and struck out two.
Young's other outing for Seattle was a two-inning scoreless stint in relief.
Kazmir didn't allow a runner and struck out six the first time through the lineup. The Mariners got back-to-back, one-out singles by Brad Miller and Robinson Cano in the fourth, but Kazmir retired Corey Hart on a grounder and struck out Justin Smoak with a 78 mph changeup.
The Mariners' only other scoring threat came with two outs in the sixth when Brad Miller sent right fielder Eric Sogard to the wall to bring down his flyball.
Cano, who singled in the fourth, has a 14-game hitting streak against Oakland dating to Sept. 22, 2012.
NOTES: Seattle manager Lloyd McClendon isn't sure about Major League Baseball's expanded replay format. "I'm really worried about where we're heading with replays, the effect it's having on the game, the effect it's having on the fans," Mariners manager Lloyd McClendon said. "It's confusing." McClendon is concerned about the outfield transfer rule, when umpires look to be sure fielders successfully switch the ball from the glove to their hands. The Mariners already have had three such plays this season, with mixed results. "It was made for the play at second, on the double-play ball," A's manager Bob Melvin said. "I don't think anyone thought it would come into play in the outfield as you're seeing right now." Both managers have had to talk to their players to be certain that runners go against their instincts and watch the umpires, not the play, in order to advance or hold. "I think the players are struggling more than the managers," McClendon said. "Initially, I thought I'd be a fan of it. But I'm not so sure now." ... Mariners top pitching prospect Taijuan Walker (shoulder) is scheduled to make another rehab start Tuesday in the minors. Seattle has an open spot in the rotation for that day, but McClendon said he doesn't know when Walker will be called up.