This drill is used to develop lead arm extension and the sensation of unloading the wrist properly to deliver the bathead through the zone with a snap and not a drag.
Set up using a tee or soft toss and having a mini bat is preferred.
The batter will set up his/her hitting stance using only the lead arm (with the mini bat or chocking up on a regular bat) positioning the barrel of the bat next to his/her back shoulder.
When making the swing, lead with the knob of the bat towards the ball (making a “V” with your wrist and the bat) then release the barrel to drive through the ball, letting the wrist roll only AFTER impact with the ball.
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