The Minnesota Twins have placed Joe Mauer on the disabled list with a strained muscle on his right side.

Mauer woke up Wednesday with more discomfort than he had the night before.

"It's been a very trying year for me personally," Mauer said. "I get things going and something happens, but that's baseball. ... This is another thing that I've got to work through, and hopefully it doesn't take too long and I get back out there soon."