Greinke on refining his pitches
White Sox @ D-backsMarch 17, 2019 | 00:00:18
D-backs pitcher Zack Greinke discusses how he fine tunes his stuff in Spring Training outings after striking out six over 5 2/3 frames
D-backs pitcher Zack Greinke discusses how he fine tunes his stuff in Spring Training outings after striking out six over 5 2/3 frames