LeMahieu is not in the starting lineup for Thursday's game against the Cardinals, Thomas Harding of MLB.com reports.
LeMahieu has been excellent for the Rockies this season, slashing .301/.361/.436 with 13 RBI and five stolen bases, but he hasn't gotten a day off since May 4. He'll get an opportunity to rest Thursday, with Daniel Descalso making his first start of the season by filling in for him at second base.