Twins first baseman Justin Morneau was held out of Friday's game because of a sore left forearm.

"It's not a big deal, sounded like," Twins manager Ron Gardenhire said. "It was bothering him during the game [Thursday]."

Gardenhire said the forearm was sore from swinging. Morneau arrived at the ballpark Friday feeling better and willing to test the forearm during early work. But Gardenhire decided to shut down Morneau rom all activity with an eye toward getting him in the lineup Saturday.

"Rather than have him come out and take some swings and see how it was, I said, 'Time. Let's back off today and let it get well.'" Gardenhire said.

Morneau is batting .241 with 10 homers and 33 RBI as he tries to reach 500 plate appearances for the first time since 2008.

He had a stress fracture in his lower back in 2009 then battled concussion symptoms and other ailments since midway through the 2010 season.

He had a small setback in May when he landed on the disabled list with a sore left wrist. He's batting .250 with six home runs and 24 RBI in 26 games since coming off the disabled list.