Novak Djokovic

Novak Djokovic is a Serbian professional tennis player. He is currently ranked as world No. 1 by the Association of Tennis Professionals. Djokovic has been No. 1 for a record total of 320 weeks, and has finished as year-end No. 1 on six occasions, an Open Era record shared with Pete Sampras. Djokovic has won 18 Grand Slam men's... Wikipedia