How important is defense of a Title a Measure of Greatness? If you compared Federer and Nadal at a similiar point in their career - 2012/2007 Basel, Federer has defended the following tournaments: Vienna (1) Halle (3) Wimbledon (4) ATP World Tour Finals (2) Australian Open (1) Dubai (2) Indian Wells (2) U.S. Open (3) Miami (1) Hamburg (1) Bangkok (1) Doha (1) Federer defended at 3 Grand Slams, the ATP World Tour Finals, and 3 Masters Series Tournaments. He defended on all three surfaces. Nadal has defended the following tournaments: Monte Carlo (7) Barcelona (5) Rome (3) The French Open (5) Nadal defended 1 Grand Slam and 2 Masters Series Tournaments. He defended on one surface.