Just last season , fans were calling for his trade saying he was not mature enough to be a top - end starter .
Shelby Miller , just 21 years old , is probably the team 's second best starter .
Just last season , fans were calling for Shelby Miller 's trade saying he was not mature enough to be a top - end starter .
Shelby Miller , just 21 years old , is probably the team 's second best starter .