Which tennis player won the most titles (in singles) in his career?

John McEnroe
41
Jimmy Connors
78
Roger Federer
165
Ivan Lendl
48
By virtue of his long and prolific career, Connors still holds three prominent Open Era men's singles records: 109 titles (the only man to reach 100), 1535 matches played, and 1256 match wins. His titles include eight majors (five US Open, two Wimbledon, one Australian Open), three year-end championships, and 17 Grand Prix Super Series.
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