I always thought he did better with the Titleist Driver but others argued the other side. His original endorsement deal with Nike was only for the golf ball. Then he did a deal with them for clubs forcing him to lose the Titleist clubs. Look at his 2001 stats when he won the Masters in 2001. GIR 83.33% Driving accuracy 71.43% http://www.pgatour.com/players/r/?/00/87/93/career 2010 GIR 68.06% Driving accuracy 66.07% http://www.pgatour.com/players/r/?/00/87/93/career Complete stats by year though 2007, http://www.pgatour.com/players/00/87/93/stats/2007.html If I was him I'd lose the Nike driver. He doesn't know which fairway it will end up in.