Helga Niessen Masthoff is a retired tennis player from West Germany. Her best Grand Slam singles tournament was when she reached the 1970 French Open final, losing to Margaret Court in straight sets. She won the German Open three consecutive years from 1972 through 1974, beating Martina Navratilova in the 1974 final in three sets. Masthoff was the runner-up at that tournament in 1971, losing to Billie Jean King.
The 1975 ATP Buenos Aires was a men's Grand Prix tennis circuit tournament played on outdoor clay courts in Buenos Aires, Argentina. The event was part of the 1975 Grand Prix circuit and was held from 10 November through 16 November 1975. First-seeded Guillermo Vilas won the singles title.
The 1974 Bavarian Tennis Championships was a men's Grand Prix tennis circuit tournament held at the MTTC Iphitos in Munich, West Germany which was played on outdoor clay courts. It was the 58th edition of the tournament and was held from 13 May through 19 May 1974. Seventh-seeded Jürgen Fassbender won the singles title.
The 1976 Romika Cup, also known by as the Bavarian Tennis Championships, was a men's tennis tournament that was part of the Two Star category of the 1976 Grand Prix tennis circuit. The tournament was held at the MTTC Iphitos in Munich, West Germany and ran from 4 May through 9 May 1976. Manuel Orantes won the singles title.
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 1974 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the Toronto Cricket Skating and Curling Club in Toronto in Canada that was part of the 1974 Commercial Union Assurance Grand Prix and of the 1974 WTA Tour. The tournament was held from August 12 through August 18, 1974.
The 1976 Grand Prix German Open, also known by its sponsored name Holsten-Bier German Open. was a combined men's and women's tennis tournament played on outdoor red clay courts. It was the 68th edition of the event and was part of the 1976 Commercial Union Assurance Grand Prix circuit. It took place at the Am Rothenbaum in Hamburg, West Germany, from 17 May through 23 May 1976. Eddie Dibbs and Sue Barker won the singles titles.
The 1976 Suisse Open Gstaad was a men's tennis tournament played on outdoor clay courts in Gstaad, Switzerland. It was the 31st edition of the tournament and was held from 4 July through 11 July 1976. The tournament was part of the Grand Prix tennis circuit. Raúl Ramírez won the singles title.
The 1976 Austrian Open , also known as the 1976 Head Cup for sponsorship reasons, was a tennis tournament played on outdoor clay courts. It was categorized as a two-star tournament and was part of the 1976 Commercial Union Assurance Grand Prix circuit. It took place at the Tennis stadium Kitzbühel in Kitzbühel Austria and was held from 12 July until 19 July 1976. Manuel Orantes won the singles le.
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 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 1974 U.S. Clay Court Championships was a combined men's and women's tennis tournament held in Indianapolis, Indiana in the United States and played on outdoor clay courts. It was part of the men's Grand Prix and women's International Grand Prix. It was the 6th edition of the tournament and was held from August 5 through August 12, 1974. First-seeded Jimmy Connors won the men's singles title and accompanying $16,000 prize money while Chris Evert took the women's title.
The 1974 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 1974 Commercial Union Assurance Grand Prix circuit while the women's tournament was part of the Women's International Grand Prix circuit. The tournament was held from 26 May through 3 June 1974. The singles titles were won by third-seeded Björn Borg and first-seeded Chris Evert.
The 1975 Suisse Open Gstaad was a men's tennis tournament played on outdoor clay courts in Gstaad, Switzerland. It was the 30th edition of the tournament and was held from 7 July through 13 July 1975. The tournament was part of the Grand Prix tennis circuit and categorized in Group B. Ken Rosewall won the singles title and the accompanying $8,000 prize money.
The 1974 Louisville Open, also known as the First National Tennis Classic, was a men's tennis tournament played on outdoor clay courts at the Louisville Tennis Center in Louisville, Kentucky, USA. It was the fifth edition of the tournament and was held from 29 July through 5 August 1974. The tournament was part of the Grand Prix tennis circuit and categorized in Group AA. The singles final was won by tenth-seeded Guillermo Vilas who received the $16,000 first prize money and 80 Grand Prix points.
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 Berlin Open was a men's tennis tournament staged in Berlin, West Germany. The men's event was part of the Grand Prix circuit and categorized in Group C. The tournament was played on outdoor clay courts and was held from 4 June until 11 June 1973. It was the inaugural edition of the tournament and Hans-Jürgen Pohmann won the singles title.
The 1976 Berlin Open, also known as the Berlin Grand Prix, was a men's tennis tournament staged in Berlin, West Germany that was part of the Grand Prix circuit and categorized as a One star event. The tournament was played on outdoor clay courts and was held from 14 June until 20 June 1976. It was the second edition of the tournament and unseeded Víctor Pecci won the singles title.
The 1973 Milo International Tennis Classic, also known as the Manila Open, was a men's tennis tournament played on outdoor clay courts in Manila, the Philippines. It was the inaugural edition of the event and was held from 15 October through 21 October 1973. The tournament was part of the Grade C tier of the Grand Prix tennis circuit and was the third leg of the Asian circuit. Ross Case won the singles title.
The 1974 Philippine Championships was a men's tennis tournament played on outdoor clay courts in Manila, the Philippines. It was the second edition of the event and was held from 11 November through 17 November 1974. The tournament was part of the Group B tier of the Grand Prix tennis circuit. Ismail El Shafei won the singles title.
Eddie Dibbs [1] 
Helga Masthoff 
Raquel Giscafré 
