Serbia's Novak Djokovic snatched the top spot of the men's Association of Tennis Professionals world singles rankings released on Monday from Spanish tennis great Rafael Nadal, now World No. 2.
Djokovic had secured World No. 1, following Nadal's retirement from the Paris Masters due to abdominal problems, although the Serbian was defeated 5-7, 4-6 on Sunday by Russia's Karen Khachanov, who jumped seven places to World No. 11 after winning the title.
Kei Nishikori of Japan made it to the top-10 list by climbing two places up to world No. 9, thanks to reaching the quarter-finals in Paris, dropping John Isner of the United States down to 10th.
The current top-10 ATP rankings and point scores are as follows: