Wrecking Ball The “Wrecking Ball” Drill is a great Sharpen drill to train and develop hip explosion. To access this post, you must purchase Contact Drills Library (ALL Positions), Contact Drills Library (ALL Positions) Monthly, Contact Drills Library (ALL Positions)Test, Digital contact certification plus drills, Advanced Leverage Library (O-Line & D-Line), Advanced Leverage Library (O-Line & D-Line) Monthly, Tip of the Spear Library, Tip of the Spear Library Monthly or Coaches Training Bundle.