The New York Yankees placed second baseman Starlin Castro on the 10-day disabled list Tuesday with a right hamstring strain.
The move comes a day after Castro hurt his leg while trying to beat a ground ball that ended the third inning of the Yankees' 6-5 win against the Chicago White Sox.
After the game, neither manager Joe Girardi nor Castro was certain if the second baseman would end up on the DL. Castro was set to have an MRI on Tuesday.
Castro, 27, has had a first half that might make him worthy of an AL All-Star selection.