MINNEAPOLIS -- Twins first baseman Justin Morneau returned to the lineup on Saturday after missing Friday's game with a sore left forearm.

Morneau injured his forearm while swinging the bat on Thursday, but came in on Saturday feeling better.

He took some swings in the cages before the game and declared he was ready to return, according to manager Ron Gardenhire.

"He went down there and got his treatment and was swinging," Gardenhire said. "So he was fine. He said he's ready to go."

Mauer day to day with sore hamstring

MINNEAPOLIS -- Twins catcher Joe Mauer was held out of the lineup against the Brewers on Saturday with a sore hamstring. He is day to day.

Mauer injured his hamstring while running the bases in Friday's 5-3 loss to the Brewers. He stayed in the game, but it got worse as the game went along, according to Twins manager Ron Gardenhire.

"Mauer has a little bit of a sore hamstring," Gardenhire said. "It happened last night in the game. So we'll back him off and we'll go day to day."

Mauer tried testing his hamstring before Saturday's game, but ultimately decided it would be best to give it a day of rest. Gardenhire said Mauer is available to pinch-hit, but would need a pinch-runner.

"It was barking on him last night pretty good," Gardenhire said. "He came in today and said he was feeling better, but when he went out there to run it was grabbing on him pretty good."

With Mauer out, Ryan Doumit started behind the plate for the Twins. Josh Willingham, who is dealing with a sore knee, served as designated hitter.

Plouffe's power display turning heads

MINNEAPOLIS -- Trevor Plouffe is starting to turn heads with the way he's been swinging the bat over the last month.

Dating back to May 16, Plouffe leads the Majors with 13 homers in 22 games. He entered Saturday's game having homered in six of his last seven games, with seven homers over that span.

"It's pretty amazing to tell you the truth," Twins manager Ron Gardenhire said. "It seems like every night he hits one. It's a pretty amazing feat. He's a guy who's pretty locked in, and seeing it pretty good."

Even Brewers manager Ron Roenicke said he couldn't believe how much power Plouffe has been supplying, as Plouffe hit two homers off of Yovani Gallardo on Friday.

"I thought OK, if we make our pitches, we'll be fine," Roenicke said. "We didn't make our pitch in the first one. That was right where we weren't supposed to throw the ball -- fastball first pitch, middle-in. But the second at-bat -- he was on every single pitch we threw him. All different pitches. He fouled off a curveball, slider, great fastball down and away. And then we throw him a changeup low, and he hits it in the upper deck. He's locked in. He's to the point where I'm wondering, what do you throw this guy?"

Plouffe, who already has set the club record with eight Interleague homers so far this season, said he can't put into words why he's been on such a tear.

"It's hard to explain," Plouffe said. "I'm just trying to ride the wave as long as possible. I'm trying to help the team win. I'm putting good swings on pitches, laying off pitches, getting myself into better counts."