1970 US Open (tennis) 1970 US Open (tennis) The 1970 US Open was a tennis tournament that took place on the outdoor grass courts at the Forest Hills, Queens in New York, United States. The tournament ran from 2 September until 13 September. It was the 90th staging of the US Open, and the fourth Grand Slam tennis event of 1970. It was the first Grand Slam tournament in which the tiebreak was used to decide the set at a 6-6 score. It differed from the current tie-break scoring in that it was won by the first player to reach five points with a
1970 Grand Prix (tennis) played in April in Rome, was part of the Grand Prix calendar but it was withdrawn during the tournament when it became known that they had paid management fees to the competing World Championship Tennis organization. The tournaments listed above were divided into three categories. Class A consisted of the Grand Slams while the other tournaments were divided into Class 1 and Class 2. Points were allocated based on these groups and the finishing position of a player in a tournament. Ties were settled by the number of tournaments played. The points allocation is listed below: The list of winners