Ian Gibaut Injury: Undergoing testing

Gibaut (shoulder) has returned to Cincinnati, where he is undergoing tests after being pulled from a rehab assignment, MLB.com reports.

Gibaut was roughed up in a rehab outing for Triple-A Louisville last week and had the assignment paused when his arm didn't recover well. It's unclear if it was the shoulder or another part of the arm that is the source of the current problem.