In particular , it 's essential for hitters to have sufficient hip internal rotation and extension .
You do n't have to look any further than the rise in hip injuries over the past decade to recognize just how aggressive the hip rotation is during the baseball swing .
It 's essential for hitters to have sufficient hip internal rotation and extension .
You do n't have to look any further than the rise in hip injuries over the past decade to recognize just how aggressive the hip rotation is during the baseball swing .