What does Hip-Rotation mean and is it the same as opening & closing the door?
Hip Rotation means the pitcher’s glove side Hip TURNS towards the target as the pitcher strides forward. Then the Ball side hip TURNS towards the target as the pitcher PUSHES from the rubber and closes the space between her KNEES. YES! It is the same as “opening and closing/slamming” the door. The pitcher’s Hip Rotates (turns) twice during the pitch or “Opens and Closes”.