Twins placed C Joe Mauer on the 7-day concussion disabled list. Mauer took a couple foul tips off the mask during Monday's game, and he had to be scratched from Tuesday's contest after feeling dizzy during batting practice. As is always the case with concussions, it's totally up in the air as to when Mauer will be back, but you can bet the Twins will take it extra cautiously with their best player.