The current iteration of the ATP Finals started in 1970 as the Masters Grand Prix, with American Stan Smith claiming the inaugural title. Since that time, the list of champions has included Grand Slam winners, US Open titlists and current and future Hall of Famers.

But among that group, just seven have won both the US Open and the ATP Finals singles crowns in the same year.

The first to do so was Ilie Nastase, who won his lone US Open title in 1972 and, later that year, claimed his second of four season-ending championships. It would be 12 years until another man followed suit, with John McEnroe winning both in 1984. Ivan Lendl followed soon after, sweeping the two crowns each year from 1985 to 1987.

Lendl is, in fact, one of just two men who have completed the US Open-ATP Finals double on more than one occasion. The other is Roger Federer, who did so in 2004, 2006 and 2007.

The other men to complete the sweeps are Pete Sampras in 1996, Lleyton Hewitt in 2001 and Novak Djokovic in 2015. That Sampras accomplished the feat just once is a bit of an upset, considering he won five titles at each event.

The most surprising omission from this list is Jimmy Connors, who won five US Open singles titles but only one ATP Finals crown.

In addition to Connors, others who won a US Open singles championship as well as ATP Finals crown – but never in the same year – include Smith (1970 ATP, 1971 US Open), Guillermo Vilas (1974 ATP, 1977 US Open), Manuel Orantes (1975 US Open, 1976 ATP), Boris Becker (1989 US Open, ATP in 1988, 1992 and 1995), Stefan Edberg (1989 ATP, 1991-92 US Open), Andre Agassi (1990 ATP, 1994 and 1999 US Open) and Andy Murray (2012 US Open, 2016 ATP).