Open To Close On Knee: Right knee down, left knee up, arms in "L" position. I need to try some of these because I pitch!
softball pitching leg drive drills
Essential Softball Pitching Grips
DIY Pitching Machine
Get outta town
Windmill Pitching Drills for Beginners
Mega Softball Drills: Pitching
Health & Fitness
home batting cage with pitching machine - Google Search
Softball Pitching Drills: The Wrist Snap & Posture | iSport.com
The “Push Off” softball pitching mechanics drill cuts down the distance between the pitcher/catcher and builds more momentum to throw the ball harder.
Softball Pitching - How To Throw Speed Pitches