Twins catching prospect Wilson Ramos is expected to miss seven to 10 days with a strained oblique muscle, according to Twins minor league director Jim Rantz.
Ramos, who could be a key trade chip for the Twins this summer, injured himself in Saturday's game for Class AAA Rochester. Catcher Allan de San Miguel has been promoted from Class A Fort Myers to help handle the catching duties for Rochester.
Ramos, 22, is batting .218 with four home runs and 18 RBI for the Red Wings. He batted .296 with three doubles in seven games for the Twins when Joe Mauer suffered a bruised left heel.
(*) La Velle E. Neal III contributed to this report.