Minor left Friday's rehab start with shoulder stiffness and is now unlikely to pitch for the Royals this year, Josh Vernier of 610 Sports Radio reports.

EDGE Analysis

The Royals were hoping that Minor would be able to start for the big league club at some point this season, but his latest setback makes that unlikely. The extent of Minor's latest setback is not certain, but with just a few weeks of minor-league games remaining, he could be shut down for the season.