#5 Roy Emerson - 12
Despite having retired almost 50 years ago, Roy Emerson continues to be fifth on the list of most number of Grand Slam titles won by a single player.
With no one near his tally, he is set to remain on this list for quite a long time.
Emerson dominated the tennis circuit in the 1960s, winning all his slams in that period. Just like Federer and Djokovic, he won a total of 6 Australian Open titles. He also won 2 slams each in Australia, England, and the USA.
He is also the only male player to have won all four Grand Slam titles in singles and doubles. He won a total of 16 Grand Slam titles in doubles in addition to his 12 singles titles.
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Edited by Rajdeep Puri