| Year | Tournament | Result | Player | Age | Nation |
|---|---|---|---|---|---|
| 1974 | French Open | R64 | Marijke Schaar | 29 | Netherlands |
| 1974 | Australian Open | R32 | Nellemieke Brouwer | 21 | Netherlands |
| 1974 | Australian Open | R64 | Jan Hordijk | n/a | Netherlands |
| 1974 | Australian Open | R64 | Nora Blom | n/a | Netherlands |
| 1974 | Australian Open | R64 | Anneloes Scothorst | n/a | Netherlands |
| 1973 | US Open | R16 | Tom Okker | 29 | Netherlands |
| 1973 | US Open | R32 | Betty Stöve | 28 | Netherlands |
| 1973 | Wimbledon | R64 | Marijke Schaar | 28 | Netherlands |
| 1973 | Wimbledon | R64 | Trudy Groenman | 29 | Netherlands |
| 1973 | Wimbledon | R128 | Jan Hordijk | n/a | Netherlands |
| 1973 | Wimbledon | R128 | Betty Stöve | 27 | Netherlands |
| 1973 | French Open | Q | Tom Okker | 29 | Netherlands |
| 1973 | French Open | R16 | Betty Stöve | 27 | Netherlands |
| 1973 | French Open | R64 | Marijke Schaar | 28 | Netherlands |
| 1972 | US Open | R16 | Betty Stöve | 27 | Netherlands |
| 1972 | US Open | R32 | Tom Okker | 28 | Netherlands |
| 1972 | Wimbledon | R16 | Betty Stöve | 27 | Netherlands |
| 1972 | Wimbledon | R32 | Trudy Groenman | 28 | Netherlands |
| 1972 | Wimbledon | R64 | Ada Bakker | 24 | Netherlands |
| 1972 | Wimbledon | R128 | Marijke Schaar | 27 | Netherlands |
| 1972 | French Open | R32 | Trudy Groenman | 28 | Netherlands |
| 1972 | French Open | R32 | Betty Stöve | 26 | Netherlands |
| 1972 | French Open | R32 | Marijke Schaar | 27 | Netherlands |
| 1971 | US Open | S | Tom Okker | 27 | Netherlands |
| 1971 | US Open | R64 | Ada Bakker | 23 | Netherlands |
| 1971 | US Open | R64 | Betty Stöve | 26 | Netherlands |
| 1971 | Wimbledon | R16 | Tom Okker | 27 | Netherlands |
| 1971 | Wimbledon | R16 | Marijke Schaar | 26 | Netherlands |
| 1971 | Wimbledon | R32 | Ada Bakker | 23 | Netherlands |
| 1971 | Wimbledon | R64 | Trudy Groenman | 27 | Netherlands |
| 1971 | Wimbledon | R64 | Betty Stöve | 26 | Netherlands |
| 1971 | French Open | S | Marijke Schaar | 26 | Netherlands |
| 1971 | French Open | R16 | Betty Stöve | 25 | Netherlands |
| 1971 | French Open | R32 | Trudy Groenman | 27 | Netherlands |
| 1971 | Australian Open | S | Tom Okker | 27 | Netherlands |
| 1970 | US Open | R16 | Tom Okker | 26 | Netherlands |
| 1970 | Wimbledon | R32 | Marijke Schaar | 25 | Netherlands |
| 1970 | Wimbledon | R32 | Ada Bakker | 22 | Netherlands |
| 1970 | Wimbledon | R64 | Tom Okker | 26 | Netherlands |
| 1970 | Wimbledon | R64 | Trudy Groenman | 26 | Netherlands |
| 1970 | Wimbledon | R64 | Betty Stöve | 25 | Netherlands |
| 1970 | French Open | R64 | Betty Stöve | 24 | Netherlands |
| 1970 | French Open | R64 | Judith Salomé | 21 | Netherlands |
| 1970 | French Open | R64 | Marijke Schaar | 25 | Netherlands |
| 1970 | Australian Open | Q | Tom Okker | 25 | Netherlands |
| 1969 | US Open | R128 | Tom Okker | 25 | Netherlands |
| 1969 | Wimbledon | Q | Tom Okker | 25 | Netherlands |
| 1969 | Wimbledon | R64 | Astrid Suurbeek | 22 | Netherlands |
| 1969 | Wimbledon | R64 | Tine Zwaan | 22 | Netherlands |
| 1969 | Wimbledon | R64 | Ada Bakker | 21 | Netherlands |
Open Era Grand Slam Tennis
This site is dedicated to Grand Slam tennis stats from the Open Era – for those of us who love the numbers behind the game. Pick any group of players and see how they rank. Compare, filter, and view the same data from different angles – whether you want to explore dominance, consistency, or longevity. In short: It’s all about turning tennis history into insights you can actually play with.