Among the most successful players on grass in the Open Era have been Rod Laver, Pete Sampras, Steffi Graf, Martina Navratilova, John Newcombe, Björn Borg, Margaret Court, Evonne Goolagong Cawley, Roger Federer, Novak Djokovic, Venus Williams, Serena Williams, Billie Jean King, and Chris Evert. All have won at least five grand slam singles titles on grass; Navratilova won twelve, Federer and Court won eight, while King, Sampras, Graf, and Serena Williams each won seven, and Djokovic won five. Other players who have been relatively successful on grass during the Open era are Arthur Ashe, Ken Rosewall, Boris Becker, John McEnroe, Stefan Edberg, Virginia Wade, Rafael Nadal, Petra Kvitová and Andy Murray.