The Star Tribune is reporting that the Twins are calling up outfielder Darin Mastroianni and catcher Juan Centeno from triple-A Rochester.  Mastroianni is batting .208 with 6 stolen bases and Centeno is batting .245 with 1 homerun and 5 RBIs at triple-A Rochester.  The Twins are expected to option backup catcher John Ryan Murphy to triple-A Rochester.  Murphy is battting .075 this season with the Twins.

The Twins reportedly yesterday placed pitchers Tommy Milone and Case Fien on waivers.  Milone has a 5.79 ERA in 6 appearances this season while Fien has a 7.90 ERA in 14 games this season with the Twins.  Additional roster moves are expected.