Pitching Motion
Differences from a typical fastball delivery:
Lead with palm
Stiff wrist
Shorter stride
Release ball with flick of fingers
Zink throws his knuckleball 65 to 70 miles per hour.
Differences from a typical fastball delivery:
Lead with palm
Stiff wrist
Shorter stride
Release ball with flick of fingers
Zink throws his knuckleball 65 to 70 miles per hour.
(Globe Staff Illustration / David Butler)