er - women do not play men's tennis
Roger Federer: 16 grand slams
Margaret Court Smith, 24 Slams. She also won 38 doubles titles in grand slams, 19 women's doubles and 19 mixed doubles
It depends on which of the four grand slams you are referring to, and if you are referring to men's or women's champions. Most likely, your answer will be Nadal:)
billie jean king
Pete Sampras and Roger Federer both have 14 grand slams each.
He won 16 Grand Slams, most in tennis history.
Bjorn Borg -2
Roger Federer with 15 Grand Slams