DETROIT -- The extra rest paid off for Kirk Saarloos.
"Another outstanding performance," Oakland manager Ken Macha said. "For a fifth starter to throw seven shutout innings, it's just terrific."
Saarloos (9-6), who last started Aug. 13, gave up seven hits and two walks, and struck out three to win his fourth consecutive decision. He also beat the Tigers with a seven-hitter at home on July 31.
Eric Chavez, who missed the previous night's game to be with his wife and newborn son, singled in his first two appearances, then hit a solo homer off reliever Roman Colon into the left-field stands during Oakland's four-run fourth inning.
"We haven't been swinging the bats lately," said Chavez, who arrived in Detroit at 1:30 p.m. Wednesday. "Hopefully we can score five, six runs tomorrow and get our confidence back."
The A's won 20 of 24 games after the All-Star break but have followed that by losing nine of 14.
"There's a lot more baseball to be played," Chavez added. "Things like this usually come around. I think there's another stretch in our bats we can put together."
Mark Kotsay had a three-run homer off Colon in the fourth inning and Bobby Crosby added a solo homer in the sixth. Mark Ellis led off the game with a solo shot.
"(Oakland) got back on track and we just couldn't stop them," said Detroit manager Alan Trammell, whose club had won eight of nine games and surrendered just two hits to the A's on Tuesday. "It was just a night the Tigers got pounded."
The Athletics snapped their three-game skid, and ended the Tigers' five-game win streak.
"It's nice to have the bats come around," Macha added. "And we had some great defensive plays, too."
The A's turned three double plays, including one in the seventh when Crosby rolled after stopping Ivan Rodriguez's grounder, then flipped the ball from his glove to second baseman Ellis.
Jeremy Bonderman (14-10) gave up six runs and nine hits in three-plus innings for Detroit. He left the game in the fourth inning when Marco Scutaro's line drive struck his right wrist. X-rays were negative and he was to be evaluated again Thursday.
"I thought for sure it was broken," third baseman Brandon Inge said. "I went over to the mound and looked at him and he was in an extreme amount of pain. I looked at his arm and I could've sworn I saw bone jetting out of his arm. It was just the swelling already, I guess."
Bonderman, who said he was trying to catch the ball, gave up four runs in the July 31 loss against Saarloos at Oakland.
Carlos Pena hit a two-run homer deep into the right-center field bleachers off Oakland reliever Keiichi Yabu in the eighth. The shot was estimated at 428 feet. Pena is 9-for-16 with six homers and 12 RBI since being recalled from Triple-A Toledo on Aug. 17.