PUMP IT UP
Rory's bulging left triceps isn't for show—it's working hard to slow down the speed of the grip. Slow down? Yep, so that the speed in the handle can transfer to the clubhead
for a whip-fast impact. It happens automatically when you swing in rhythm, not out of your spikes.
POST AND SWIVEL
Rory has freakish hip speed. His secret? He "locks" his left leg near impact (see No. 3) which creates a post for his hips to
turn around. If you do it correctly, it'll feel like your right hip is "chasing" the ball as it leaves the clubface.
LOCK IT UP
Don't turn your left knee toward the traget through impact. It's a big-time power drain common to recreational swings. Instead,
lock it in place like Rory does. You don't have to straighten your leg to do it. In fact, it helps to push your left leg into the turf.
A bonus to pressuring the ground with your left leg is that it produces a powerful thrust in the opposite direction, as evidenced by how “vertical” Rory looks
at impact with his arms pulled straight. You push, your body pulls—and the ball goes far.