OAKLAND, Calif. (AP) -- Jake Smolinski homered twice for four RBIs, Josh Reddick hit a grand slam and the Oakland Athletics slugged past the Minnesota Twins 14-1 on Sunday.
Billy Butler and Josh Phegley hit two-run homers for the A's, who cleared the fences a season-high five times to boost their 2015 total to 80.
Smolinski hit a three-run homer in the eighth and an earlier solo shot for his first career multihomer game. The outfielder was promoted from Triple-A on July 7.
Jesse Chavez (5-9) struck out nine in six innings for his second highest total of the year. He snapped a three-start losing streak with his first victory since June 23 at Texas, escaping a bases-loaded jam in the fourth.
Smolinski followed Butler's third-inning home run with a solo drive off Tommy Milone (5-2) for his first clout with the A's. Reddick hit his third career grand slam in the fifth against J.R. Graham.
Milone hadn't allowed a home run in five starts since Elvis Andrus connected in the seventh inning June 12 at Texas. The left-hander surrendered three facing his former team for the first time since the A's traded him at last year's July 31 deadline for outfielder Sam Fuld.
Milone's afternoon was done - he had been 3-0 in five day starts this year - when Brett Lawrie followed Smolinski's full-count homer with a single. Phegley and Ben Zobrist added RBI doubles in the inning.
Milone saw the end of his streak of four straight winning decisions over a six-start span with his shortest outing of the season at 2 2/3 innings. He yielded a season-high seven runs and matched his most with five earned runs.
In the second, Lawrie reached on a two-out throwing error by shortstop Danny Santana and Phegley followed with a drive to left for his sixth home run. The backup catcher has five homers and 14 RBIs over his last 17 games.
Another mistake led to Butler's ninth home run. Milone plunked Mark Canha with two outs to bring up Zobrist.
Reddick had his first grand slam since May 16 last year at Cleveland.
Shane Robinson hit an RBI triple in the ninth as Minnesota lost for only the third time in 10 games having outscored opponents 50-27 in the previous nine.
The A's began a stretch facing a lefty starter in three straight games.
Twins: DH Miguel Sano sat out with a sprained right ankle he played through Saturday night. He was injured during pregame warmups when he stepped on a ball. It became sore as the game went on and Sano had a hard time planting on that foot, then needed crutches to get to the hotel Saturday night and again Sunday. Manager Paul Molitor said Sano would be re-evaluated but he is hopeful it will be only three to five days.
Athletics: Switch-pitcher Pat Venditte, out since June 11 with a strained right shoulder, will throw batting practice Monday at Class-A Stockton - 15 pitches with each arm. ... RHP Taylor Thompson (strained right shoulder) will throw one inning for Stockton on Tuesday.
Twins: Off day Monday. RHP Kyle Gibson (8-6) pitches Tuesday against the Angels in Anaheim.
Athletics: Off day Monday. RHP Kendall Graveman pitches the series opener against Mark Buehrle (10-5) and the Blue Jays on Tuesday night.