If you watched last weekend’s Masters which Tiger played well especially early, you may have noticed something new.  Tiger switched from this beloved Mitsubishi Diamana Whiteboard to a Graphite Design Tour AD DI 7X shaft …

Graphite Design set its sights on the introduction of their newest shaft, the Tour AD DI (Deep Impact), at the 2010 PGA Merchandise Show in Orlando, Florida between January 27-30.
The new Graphite Design Tour AD …