Grand Slam (tennis) four players (Agassi, Federer, Nadal, Djokovic) achieved their career grand slam on three different surfaces: hard court, clay, and grass. Each woman's "first wins" in the four majors are listed chronologically and their ages upon completion of the Career Grand Slam are given in brackets. Five of the ten women achieved at least two Career Grand Slams, two of the ten have achieved three Career Grand Slams and Steffi Graf is the only player to achieve four Career Grand Slams. At Men's Doubles, 21 players have won the Career Grand Slam, including fourteen who achieved the Career Grand Slam with
1977 Grand Prix (tennis) 1977 Grand Prix (tennis) The 1977 Colgate-Palmolive Grand Prix was a professional tennis circuit administered by the International Lawn Tennis Federation (ILTF, later the ITF) which served as a forerunner to the current Association of Tennis Professionals (ATP) World Tour and the Women's Tennis Association (WTA) Tour. The circuit consisted of the four modern Grand Slam tournaments and open tournaments recognised by the ILTF. The Colgate-Palmolive Masters is included in this calendar but did not count towards the Grand Prix ranking. Colgate-Palmolive was the new tour sponsor, taking over from Commercial Union. Guillermo Vilas won the Grand Prix circuit, having