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
1978 Grand Prix (tennis) awarded to first-round losers and advancements by default were equal to winning a round. The points allocation, with doubles points listed in brackets, is as follows: The list of winners and number of singles titles won, alphabetically by last name: The following players won their first title in 1978: 1978 Grand Prix (tennis) The 1978 Colgate-Palmolive Grand Prix was a professional tennis circuit held that year. It consisted of four Grand Slam tournaments, the Grand Prix tournaments and the Nations Cup, a team event. In addition eight World Championship Tennis (WCT) tournaments, a separate professional tennis circuit held from 1971