Last year Nole won the ATP World Tour Final on a walkover after Roger Federer pulled out ahead of their match. Djokovic will be looking to become the first player to win the year-end championship four times in a row.
Last year Nole won the ATP World Tour Final on a walkover after Roger Federer pulled out ahead of their match. Djokovic will be looking to become the first player to win the year-end championship four times in a row.
