A's 13, Astros 1

OAKLAND, Calif. -- Brandon Moss hit his third grand slam of the season, Jeff Samardzija threw eight strong innings and Oakland routed Houston at O.co Coliseum.

Making his fourth start since being traded to the A's from the Chicago Cubs, Samardzija (2-1) allowed one run and five hits in eight innings. He struck out six and walked none.

The A's led 4-1 entering the bottom of the sixth inning when Moss made it 8-1 with one swing of the bat against Astros reliever Anthony Bass, launching a first-pitch fastball to right field for the grand slam.