#2 Novak Djokovic
Novak Djokovic, in addition to his tally of 14 Grand Slam Singles titles, has also won 31 ATP Masters titles. Djokovic is the only man to have won 6 ATP Masters 1000 titles in a single calendar year. He achieved this in the year 2015 when he won Indian Wells, Miami Open, Monte-Carlo Masters, Madrid Open, Rome Masters and Shanghai Masters.
In the year 2018, Novak completed the 'Career Golden Masters' - the only man in the Open Era to have done so. He did so by beating long-time nemesis Roger Federer at the Cincinnati Open in Ohio in the year 2018.
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Edited by Nishant Jayaram