Franklin Barreto hit a three-run home run to cap a seven-run first inning, and the Oakland Athletics beat the Chicago White Sox 13-2 on Saturday.
Matt Chapman had three hits and scored twice for the A's, who have won nine of 11. Marcus Semien added two hits and Robbie Grossman drove in three runs.
Chris Bassitt (6-4) pitched six scoreless innings and struck out six.
Semien and Chapman started Oakland's early barrage with back-to-back doubles off Dylan Covey (1-5). After Matt Olson and Khris Davis walked, Grossman's two-run single made it 3-0.
Chris Herrmann added an RBI single to chase Covey before Barreto homered off former A's reliever Ross Detwiler.
Five of Barreto's nine career home runs have come against the White Sox. His three-run drive extended the A's season-high streak to 14 games with at least one home run.
Oakland scored four more in the fourth and made it 12-0 in the sixth when Ramón Laureano was hit by a pitch with the bases loaded
Covey couldn't overcome command issues after being activated off the injured list before the game. The right-hander allowed six runs, walked two and gave up four hits in his first start since June 5 because of shoulder inflammation.
Blake Treinen allowed two runs in the White Sox seventh and has a 6.11 ERA over his last 18 games. Treinen leads the A's with 16 saves this season but was replaced as the closer by Liam Hendriks after going on the injured list with a strained right shoulder in late June.