"He's still day-to-day. We did get him on the treadmill yesterday, more just range of motion and some activity, no running as of yet," said Red Sox manager John Farrell. "That's the latest update I have. There's no projected time right now, as far as his return to the lineup."
Snyder was promoted from Triple-A Pawtucket on Tuesday to coincide with the demotion of Will Middlebrooks to the Minors, but has been used sparingly.
In 63 games for Pawtucket this season, Snyder is hitting .267 with 16 doubles, one triple, 10 homers and 37 RBIs.
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.