No. 1 Nadal cruises through first round of Rio OpenBrazil's most famous women's player is Maria Bueno, who won seven Grand Slams, the last at the US Open in 1966.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceNo. 1 Nadal cruises through first round of Rio Open Brazil's most famous women's player is Maria Bueno, who won seven Grand Slams, the last at the US Open in 1966. Add us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Feb 19, 2014 | Modified Feb 19, 2014SI STAFFShare on FacebookShare on XHome/Tennis