George Pinnell has known Rose Zhang for almost 10 years. The phenom of women's golf was 11 when she first landed at Pinnell’s driving range, and they've been working together ever since. When Pinnell ...

First, let's get one thing straight: No, you shouldn't be thinking about all these things as you swing—unless you want to have your head so scrambled that you can't hit the golf ball. Instead, think ...