Connors, Sampras, Federer
Kim Clijsters.
Chris Evert. The American who has won the french open 7 times. (1974,1975,1979,1980,1983,1985 and then her last in 1986).
Chris Evert won the US Open 6 times, the only person to do so.
Juan Martin Del Potro defeated Roger Federer in five sets in '09
From my side it should be Chris Evert
The 2011 US golf open was won by Rory Mcilroy and the 2011 US tennis open, was won in the mens by Novak Djokovic and in the womens by Samantha Stosur.
Rafael Nadal won the 2010 U.S. Open in men's singles.
Bjorn borg
Wimbledon, Us Open and A few more I think.
Raphael Nadal
Thomas Johansson.
Borg won the French open six times in a row and Wimbledon five times in a row.