He 's had some failure as a starter .
He struggled through what a lot of starters go through early in their careers , and look at him now , ' ' said Juan Nieves , Miller 's pitching coach with the Red Sox in 2013 and ` 14 .
He 's had some failure as a starter and he struggled through what a lot of starters go through early in their careers , and look at him now , ' ' said Juan Nieves , Miller 's pitching coach with the Red Sox in 2013 and ` 14 .