Get this question a lot, too. Of course we want to lead with the hip but how to get them moving faster down the bump?
Explosive lateral movement drills that place an emphasis on dynamic balance, sprints, building power in the legs.
Many pitchers don't just need to get the hips moving faster but also sooner in the delivery. Hershiser drill lets you practice this timing change. Cross-over drill does too.
The trick is how do you get the hips moving faster without rushing the upper body?
delay the hand break