Most ATP titles won in a career (male)

John McEnroe (USA) won 77 singles and 78 doubles titles during his professional tennis career (1978–2006), including one mixed doubles victory as an amateur in 1977. Among his 155 career wins are 17 Grand Slam titles (seven singles, nine men’s doubles, one mixed doubles), plus eight year-end championships between 1978 and 1989.

McEnroe’s nine doubles titles (1979–92) were achieved with Peter Fleming (7), Mark Woodforde (1) and Michael Stich (1). His seven Grand Slam singles victories came at the US Open (4) and Wimbledon (3) between 1979 and 1984. As an amateur, McEnroe won the mixed doubles with Mary Carillo at the French Open in 1977. He turned pro in 1978.

McEnroe holds the overall record for the most year-end championships won – 8 – if the rival Masters Grand Prix (the forerunner of the ATP Finals) and WCT (World Championship Tennis) Finals are combined. McEnroe won five WCT Finals (1979, 1981, 1983-84 and 1989) and three titles at the Masters Grand Prix (1978 and 1983-84).