2. Novak Djokovic
While Novak Djokovic may be slightly past his prime, the all-time leader in Grand Slams remains one of the top players in the world, even at 37 years old. He is incredible on offense and defense, and his motor never stops, even into the fifth set. He enters Wimbledon just weeks removed from surgery on his right knee after an injury suffered at the French Open, and he looked stellar in his opening-round victory over Vit Kopriva.
