Rodriguez was placed on the 7-day injured list at Triple-A St. Paul on Friday with a right oblique strain, MLB.com reports.
Rodriguez had just returned to action shortly before the All-Star break after missing more than a month of action with a right hip injury, and he now appears likely to be shelved for multiple weeks once again. The top prospect has had extreme difficulty staying healthy in his professional career, as he has yet to reach 100 games played in a season.