Phillies' Andrew Painter: Undergoing tests on elbow

Painter is undergoing tests on his right elbow after alerting trainers to some soreness in the area Friday, Paul Casella of MLB.com reports.

Painter showed electric stuff during his Grapefruit League debut Wednesday but evidently came out of the appearance with some tenderness in his pitching elbow. The results of the testing are expected to be available Saturday. Painter won't turn 20 until next month, but the top prospect has an outside shot to break camp as a member of the Phillies' rotation. Even if tests don't reveal anything serious, it seems likely the right-hander will be shut down for a while as the organization proceeds cautiously with him.