In the days leading up to the British Open, Ping Golf started showing its newest drivers to tour professionals.
The Ping i15 is designed for players who are seeking more playability off the tee, while the Ping G15 is meant for players who want a forgiving driver that is designed to hit the ball straight.
Golfers who currently play the Ping G10 driver will find that the G15 (left in photo) maintains ball speed on off-center hits more effectively. The G15 also spins the ball less than the G10 and launches it at a slightly higher angle, which should help increase carry. An external weight pad moves the center of gravity lower and deeper to improve launch conditions. Although both clubs will set square at address, the G15 will be available in both neutral and draw versions.
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http://blogs.golf.com/equipment/2009/07/...071509_headline