Twins call up Walters to start against Tigers
The Twins optioned outfielder Oswaldo Arcia to Rochester after Friday night's loss to the Tigers. The 28-year-old Walters hasn't pitched in the majors this year. He went 2-5 with a 5.69 ERA in 12 starts for Minnesota in 2012.
Arcia, a rookie, has hit .255 with four home runs for the Twins.
Walters started the season with Rochester, where he was 4-2 with a 3.31 ERA.