Cardinals starter Carlos Martinez left Friday's game against the Brewers after throwing just seven pitches, Adam McCalvy of MLB.com reports.
It wasn't obvious what was ailing Martinez, but the right-hander was replaced in the top of the first after giving up a ground rule double to Scooter Gennett and getting Logan Schafer to fly out. Martinez's success has been one of the better stories of the season, and it would be a significant blow to the Cardinals if this turned out to be anything serious.