Djokovic won ATP World Tour Finals

Novak Djokovic beat Roger Federer to win the ATP World Tour Finals.
About Novak Djokovic
- He is a Sieberian national.
- professional tennis player who is currently ranked world No. 1 in men's singles tennis by the Association of Tennis Professionals.
- He has won 10 Grand Slam singles titles till now.
- he won the ATP World Tour Finals five times.