The move comes a day after Castro hurt his leg while trying to beat a ground ball that ended the third inning of a 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.
Yankees second baseman Starlin Castro said he doesn't think his hamstring injury is serious and sounded optimistic he will be able to return from the DL in 10 days.
Castro, 27, has had a first half that might make him worthy of an AL All-Star selection. He is batting .313 with 12 homers and 45 RBIs. If he is selected, this would be his fourth time as an All-Star and first with the Yankees.
In the corresponding roster moves Tuesday, the Yankees selected infielder/outfielder Tyler Wade from Scranton-Wilkes Barre, recalled left-hander Tyler Webb from the RailRiders and optioned right-hander Jonathan Holder to the Triple-A club.
Wade, a touted prospect, was hitting .313 with five home runs and 59 runs scored in 71 games for Scranton.
Tyler Wade, 22, grew up a Yankee fan, idolizing Derek Jeter. Wade, being in the Yankees' clubhouse as a member of the team, is "surreal," he said.
The Yankees already are without Aaron Hicks, who was placed on the DL with a right oblique strain Monday that could keep him out for three or four weeks. CC Sabathia, Greg Bird and Adam Warren are also on the DL.
Meanwhile, the Yankees are still trying to figure out what exactly is wrong with designated hitter Matt Holliday. Holliday missed his third game in a row Tuesday night, and manager Joe Girardi said Holiday's body feels zapped of any energy.
The Yankees sent him for blood tests on Monday, but found no illnesses. If Holliday's situation doesn't improve soon, Girardi indicated the Yankees will have to consider putting him on the disabled list.
Information from ESPN's Andrew Marchand was used in this report.