For me I have a couple of ways to hit the low shot. Say for The Open Championship in the U.K.

• The best way to hit a low ball is to keep your hands ahead of the clubface at impact. That way the golf ball will fly of the clubface with a lower trajectory and still be able to stop on the green.
• After contact, I try and abbreviate my follow through to help keep the flight down.
• Another way to hit the ball lower is to turn your hip through the shot earlier than you would. This will de-loft the club face and start the ball out on a lower flight.