Joe Mauer made his major league debut at first base in the Twins game against the White Sox on Thursday night, according to an ESPN.com report. Before he even got to play the field, Mauer hit an RBI single in the top of the first inning. "This is a good thing," manager Ron Gardenhire said. "It gives me a chance to rest his legs a little bit. Get away from squatting. We'll see how it all works out." Mauer says he doesn't plan to make this a regular occurrence.