#1 Roger Federer
The man who is always at the forefront of the 'GOAT' debate not only has the most Grand Slam Singles' titles ever but also holds the record for the most Grand Slam Singles' appearances. And it certainly doesn't seem unlikely that Roger Federer will cease to add to his remarkable tally of Grand Slam appearances and Grand Slam titles.
Since making his Grand Slam debut in the 1999 French Open as a wildcard, Roger Federer has till date featured in a whopping 74 Grand Slam matches.
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Edited by Vikshith R