Pete Sampras. And if Fereda wins tomorrow the Ausie Open('09), they'll be in the tie list!!!
Roger Federer won more than 10 grand slam titles
10 tennis Grand Slam titles.
Margaret Court with 62 Grand Slam titles from 24 Grand singles titles, 19 Grand Slam women's doubles titles, and 19 Grand Slam mixed doubles titles.
Arthur Ashe was the first African American tennis player who won 3 grand slam titles.
when you win all 4 grand slam titles in a year Wimbledon US Open French Australian Open
14 Grand slam men's singles titles
Margaret Court
A Grand Slam is a tournament of the ranked players and it spans across different continents. There are 4 Grand Slams in a year. The ATP is the Association of Tennis Professionals.
Jimmy Connors and Andre Agassi are two former, top US players who won 8 singles Grand Slam titles.However, the question does not stipulate whether the grand slams need to be only singles, or whether they are just Grand Slam titles[period]. There may be others, male or female, who won 8 Grand Slams, inclusive of singles, doubles and mixed doubles titles.
Cash
Roger Federer (SUI) 17 Grand Slam Titles
Rod Laver in 1962 and 1969.