The 1977 Colgate-Palmolive Grand Prix was a professional tennis circuit administered by the International Lawn Tennis Federation 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 accumulated the most points (2,047), and received the largest share from the bonus pool ($300,000). The top eight points ranked singles players as well as the top four doubles teams qualified for the season-ending Masters tournament
Jimmy Connors finished the year as ATP world No. 1 for the fourth time in his career. Connors won three titles during the season, including the Masters Grand Prix, and was runner-up at two majors at the Wimbledon Championships and the US Open.
Guillermo Vilas was the 1977 Grand Prix No. 1. Vilas won 16 tournaments during the season, including two majors at the French Open and the US Open.
Björn Borg was named the ATP Player of the Year. Borg won nine tournaments during the season, including a major at the Wimbledon Championships.
Guillermo Vilas is an Argentine former professional tennis player. Vilas was the world No. 1 of the Grand Prix seasons in 1974, 1975 and 1977. He won four major titles, the year-end championships, and 78 career singles titles overall, 62 of which were ATP titles. World Tennis, Agence France-Presse and Livre d'or du tennis 1977, among other rankings and publications, rated him as world No. 1 in 1977. In the computerized ATP rankings, he peaked at No. 2 in April 1975, a position he held for a total of 83 weeks, although some have argued that Vilas should have been ranked No. 1 for at least 10 weeks, particularly in 1977 when he won 2 majors. He was inducted into the International Tennis Hall of Fame in 1991, two years after his first retirement.
Guillermo Vilas during the Munich Open in May 1975
Guillermo Vilas at the 1974 Dutch Open
Vilas after winning the Buenos Aires Open and securing the first place in the 1977 Grand Prix Circuit.
Vilas celebrating his win at the 1977 French Open.