For rotational athletes like hitters and pitchers, tight hip external rotators can be a limiting factor in swing and pitch velocity.  When swinging or throwing, the body rotates on the lead leg by contraction of the hip internal rotators and relaxation of the external rotators.

So, if your hip external rotators are chronically tight and short, then your body will have to fight this inflexibility as it tries to rotate through.  With proper flexibility and mobility work, loosening up those hips will allow your body to rotate freely over that lead leg, allowing full transfer of power from hip to hip.

This stretch is quick, easy and effective.  2-3 sets of 15 on will help loosen things up and get you that full power transfer that is crucial in baseball.

For more hip stretches read my article Hip Flexibility Problems in Pitchers