He struggled at Class A Advanced Lancaster last season ( 9.74 ERA in 12 starts ) .
He was much better after being promoted to Double - A Corpus Christi ( 3.69 ERA in seven appearances ) .
He struggled at Class A Advanced Lancaster last season ( 9.74 ERA in 12 starts ) , but he was much better after being promoted to Double - A Corpus Christi ( 3.69 ERA in seven appearances ) .