Roger Federer remains the only man to win 6 titles at the Year-End Championships. The Swiss maestro made three successful titles defenses by winning the titles in 2003, 2004, 2006, 2007, 2010 and 2011.
Ivan Lendl was the first player to win 5 titles at the ATP Finals. The American legend achieved the feat by claiming the wins in 1981 and 1982 followed by a hattrick of titles from 1985 to 1987.
Pete Sampras matched Lendl's tally with his 5th title in 1999. Prior to that, he won the title in 1991, 1994, 1996 and 1997 as well. Unlike Lendl, Sampras couldn't reach another Finals at the event retiring with 5 titles.
Novak Djokovic remains the only player to win 4 consecutive titles at the event. He won his first title in 2008 and then 4 on the trot between 2012 to 2015. He was denied a record-matching 6th title in 2016 by Andy Murray and then in 2018 by Alexander Zverev.
Ilie Nastase with his 4 ATP Finals title remained unmatched till Lendl went past him. The Romanian won the titles in a space of 5 years with a hattrick of titles from 1971 to 1973 before winning his fourth and last title in 1975.
John McEnroe clinched 3 titles at the Year-End Championships during his illustrious career. The original 'Bad Boy of Tennis' emerged victorious in 1978, 1983 and 1984 to etch his name in history.
Boris Becker completes the list with 3 titles to his name as well. The German lifted the trophy in 1988, 1992 and 1995. He finished runner-up on 5 occasions as well.