The 1968 US Open was a tennis tournament that took place on the outdoor grass courts at the West Side Tennis Club, Forest Hills in New York City, United States. The tournament ran from 29 August until 8 September. It was the 88th staging of the tournament and the fourth Grand Slam event of 1968. It was the first edition of the tournament in the Open Era of tennis and as such for the first time offered prize money, totaling $100,000. Arthur Ashe and Virginia Wade won the singles titles. Ashe was still registered as an amateur and therefore not entitled to the $14,000 first-prize money, which instead went to runner-up Tom Okker, while Wade earned $6,000. Frank Parker, at the age of 52, lost to eventual champion Arthur Ashe in the second round, and still holds the record for the oldest man to compete in a Grand Slam singles tournament.
The 1973 Queen's Club Championships was a tennis tournament played on grass courts at the Queen's Club in London in the United Kingdom. The men's tournament was part of the 1973 Commercial Union Assurance Grand Prix circuit while the women's event was part of the 1973 Women's Grand Prix tour. It was the 74th edition of the tournament and was held from 17 June until 23 June 1973. Ilie Năstase and Olga Morozova won the singles titles.
The 1973 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the Toronto Lawn Tennis Club in Toronto in Canada that was part of the 1973 Commercial Union Assurance Grand Prix and of the 1973 WTA Tour. The tournament was held from August 20 through August 26, 1973. Tom Okker and Evonne Goolagong won the singles titles.
The 1979 Stockholm Open was a tennis tournament played on hard courts. The men's event was part of the 1979 Colgate-Palmolive Grand Prix, while the women's took part of the 1979 WTA Tour and took place at the Kungliga tennishallen in Stockholm, Sweden. The women's tournament was held from 2 November through 5 November 1979 while the men's tournament was held from 5 November through 11 November 1979.
The 1980 Dutch Open was a Grand Prix tennis tournament staged in Hilversum, Netherlands. The tournament was played on outdoor clay courts and was held from 21 July until 27 July 1980. It was the 23rd edition of the tournament. Balázs Taróczy won his third consecutive singles title at the event and fourth in total.
The 1979 Dutch Open was a Grand Prix tennis tournament staged in Hilversum, Netherlands. The tournament was played on outdoor clay courts and was held from July 23 to July 29, 1979. It was the 22nd edition of the tournament. Balázs Taróczy won the singles title.
The 1978 Dutch Open was a Grand Prix men's tennis tournament staged in Hilversum, Netherlands. The tournament was played on outdoor clay courts and was held from 24 July until 30 July 1978. It was the 21st edition of the tournament. Third-seeded Balázs Taróczy won the singles title, his second at the event after 1976.
The 1972 Dutch Open was a combined men's and women's tennis tournament staged in Hilversum, Netherlands. The tournament was played on outdoor clay courts and was held from 1 August until 7 August 1972. It was the 15th edition of the tournament and was a non-tour event, i.e. not part of the main men's or women's circuits. John Cooper and Betty Stöve won the singles titles.
The 1971 Dutch Open was a combined men's and women's tennis tournament staged in Hilversum, Netherlands. It was a non–tour event, i.e. not part of one of the main tennis circuits, the Grand Prix or World Championship Tennis circuit. The tournament was played on outdoor clay courts and was held from 26 July through 1 August 1971. It was the 14th edition of the tournament and was part of the 1971 Grand Prix circuit. Gerald Battrick and Evonne Goolagong won the singles titles.
The 1970 Dutch Open was a combined men's and women's tennis tournament staged in Hilversum, Netherlands. The tournament was played on outdoor clay courts and was held from 3 August until 9 August 1970. It was the 13th edition of the tournament. Tom Okker won the men's singles title and earned $3,000 first-prize money while Margaret Court won the women's singles event.
The 1972 Grand Prix German Open was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 64th edition of the event and was part of the 1972 Commercial Union Assurance Grand Prix circuit. It took place at the Am Rothenbaum in Hamburg, West Germany, from 5 June through 11 June 1972. Manuel Orantes and Helga Masthoff won the singles titles.
The 1971 Italian Open was a combined men's and women's tennis tournament that was played by men on outdoor clay courts at the Foro Italico in Rome, Italy. The men's tournament was part of the World Championship Tennis circuit while the women's tournament was a non-tour event, i.e. not part of the Grand Prix or Virginia Slims circuit. The tournament was held from 3 May through 10 May 1971. The singles titles were won by Rod Laver and Virginia Wade.
The 1971 Grand Prix German Open was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 63rd edition of the tournament. The event was part of the 1971 Pepsi-Cola Grand Prix circuit and categorized as a B Class tournament. It took place at the Am Rothenbaum in Hamburg, West Germany, from 17 May through 23 May 1971. Andrés Gimeno and Billie Jean King won the singles titles.
The 1972 British Hard Court Championships, also known by its sponsored name Rothmans British Hard Court Championships, was a combined men's and women's tennis tournament played on outdoor clay courts at The West Hants Club in Bournemouth, England. The event was part of the Grand Prix circuit and categorized as B class. The tournament was held from 8 to 13 May 1972. Bob Hewitt and Evonne Goolagong won the singles titles.
The 1971 Monte Carlo Open was a combined men's and women's tennis tournament played on outdoor clay courts at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France. The men's tournament was part of the 1971 Pepsi-Cola Grand Prix circuit. It was the 65th edition of the event and was held from 12 April through 17 April 1971. Ilie Năstase and Gail Chanfreau won the singles titles.
The 1969 German Open Championships was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 61st edition of the tournament, the second one in the Open Era, and the first edition to offer official prize money. The event took place at the Am Rothenbaum in Hamburg, West Germany, from 5 August through 11 August 1969. First-seeded Tony Roche and Judy Tegart won the singles titles. Tegart also won the doubles and mixed doubles titles.
The 1978 German Open was a combined men's and women's tennis tournament played on outdoor red clay courts. The men's tournament was part of the 1978 Colgate-Palmolive Grand Prix circuit, categorized as a four-star event, while the women's tournament was part of the Colgate Series and classified as an A category event. It was the 70th edition of the tournament and took place at the Am Rothenbaum in Hamburg, West Germany, from 15 May through 21 May 1978. Guillermo Vilas and Mima Jaušovec, both first-seeded, won the singles titles.
The 1970 German Open Championships was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 62nd edition of the tournament, the first one in the Open Era, and took place at the Am Rothenbaum in Hamburg, West Germany, from 10 August through 17 August 1970. First-seeded Tom Okker and Helga Schultze-Hösl won the singles titles.
The 1973 German Open was a combined men's and women's tennis tournament played on outdoor clay courts. It was the 66th edition of the event and was part of the 1973 Commercial Union Assurance Grand Prix circuit. It took place at the Am Rothenbaum in Hamburg, West Germany, from 11 June until 17 June 1973. Eddie Dibbs and Helga Masthoff won the singles titles.
The 1973 Dutch Open – Men's singles was an event of the 1973 Dutch Open tennis tournament played on outdoor clay courts in Hilversum, Netherlands between 16 July and 22 July 1973. John Cooper was the defending champion, but did not compete in this edition. Tom Okker won the singles title, defeating Andrés Gimeno in the final 2–6, 6–4, 6–4, 6–7, 6–3.
Tom Okker [1] 
Iván Molina / 
Allan Stone [2] 
Helga Masthoff 
