"I can't focus on that right now. I've got to focus and look at it as still making that transition back up and doing what has made me successful here and what's made me successful in Triple-A," said Diamond, who went 12-9 with a 3.54 ERA in 2012. "Going 4? is not it."
Oswaldo Arcia homered for the Twins, who have lost six of eight. In winning his fourth straight start, Griffin (14-9) struck out eight and walked just one batter.
Arcia's solo shot, the majors-most 34th home run allowed by Griffin this season, was the lone highlight for the Twins. The rookie right fielder, who has 12 homers in 309 at-bats, raised his average to .256 by going 2 for 4.
"He went through a stretch right before the All-Star break where he was really swinging and missing a lot, and he lost his confidence, but he went back down, got himself together and has been doing pretty decent up here," Gardenhire said. "He's still got things to learn. He still gets a little nonchalant. We saw him in the outfield today, a little sloppy out there, and there's things to learn, but hopefully he'll get there. He's a strong young man, and he can hit the baseball."
NOTES: Twins C Joe Mauer, sent home the day before because his concussion symptoms reappeared, returned to Target Field for a workout that went well. "He left feeling good," Gardenhire said. ... The A's and Twins are scheduled to play a four-game series in Oakland starting in a week. ... Twins 1B Chris Colabello was hitless in three at-bats and is in an 0-for-14 slump. ... Kevin Correia (9-11, 4.30) is scheduled to pitch for the Twins against Tampa Bay's Chris Archer (8-7, 3.19) when the Rays arrive for a three-game series starting Friday. ... Despite the loss, the Twins are still 19-10 against the AL West this season.