"In pro tennis, the players with the more extreme grips appear to have much more extreme rotation. They are also the players who tend to hit the most open stance forehands. Possibly, the issues of rotation, swing plane, etc, relate as much or more to grip style than it does to stance." (so many lurking variables in his research..)

그립이 또 다른 이슈네요. 쿠에르텐 선수가 좀 더 간결하게 리턴할 수 있다면 더 좋은 성적을 낼 수 있을거라고 생각하는데...과장된 스윙 동작일까요? 그립일까요?