The toughest surface to play on is a grass court, because it is really fast and you can't compare it to any other surface. The balls tend to stay low and sail when you slice the ball taking a lot of time away from your opponent.
— Pete Sampras
Career Duration: 1998 to Present Career Grand Slams: 20
Career Duration: 2001 to Present Career Grand Slams: 19
Career Duration: 2003 to Present Career Grand Slams: 17
Career Duration: 1988 to 2002 Career Grand Slams: 14
Career Duration: 1986 to 2006 Career Grand Slams: 8