According to
this article, "[o]nly 12 men in the Open era, which began in 1968, have saved a match point on the way to winning a Grand Slam title in singles." This article was from 2014, so Wawrinka would be #13. The article references Djokovic at the 2011 U.S. Open and Becker at the 1989 U.S. Open. Others mentioned in this thread are (1) Orantes at the 1975 U.S. Open; (2) Safin at the 2005 Australian Open; (3) Panatta at the 1976 French Open; (4)
Gaudio at the 2004 French Open; (5) Sampras at the 1996 U.S. Open; and (6) Roddick at the 2003 U.S. Open. So, that's nine out of the thirteen, with Wawrinka included. Interestingly, six out of those nine came at the U.S. Open.
Does anyone know the other four?
[Edit: Here's
the list: The other three are: (1) Newcombe saved three match points against Roche in the 1975 Australian Open SF before winning the final; (2) Kriek saved 1 match point against McNamee in the 1982 Australian Open SF before winning the final; (3) Edberg saved 2 match points in the 1985 Australian Open SF against Masur before winning the title; and (4) Kuerten saved 1 match point against Russell in the 2001 French Open fourth round before winning the title.
].