a) Novak Djokovic
b) Roger Federer
c) Rafael Nadal
d) Andy Murray
Serbian Tennis star Novak Djokovic clinched year-end world number one ranking for a record sixth time on November 6, 2020. He has now equaled the record of American Tennis great Pete Sampras, who ended with world number one ranking for six straight years between 1993 and 1998.