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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 16y 349d | Boston 1984 | |
| 2 | 17y 46d | Geneva 1984 | |
| 3 | 17y 96d | Roland Garros 1989 | |
| 4 | 17y 195d | Munich 1987 | |
| 5 | 17y 237d | Athens 1987 | |
| 6 | 17y 274d | Roland Garros 1982 | |
| 7 | 17y 288d | Genova 1992 | |
| 8 | 17y 316d | Stuttgart Outdoor 1992 | |
| 9 | 17y 323d | Bastad 1982 | |
| 10 | 17y 352d | Rome 1974 | |
| 11 | 17y 361d | Roland Garros 1974 | |
| 12 | 17y 361d | Charleston 1988 | |
| 13 | 18y 3d | Forest Hills 1988 | |
| 14 | 18y 8d | Bastad 1981 | |
| 15 | 18y 14d | Bordeaux 1992 | |
| 16 | 18y 26d | Buenos Aires 1987 | |
| 17 | 18y 28d | Geneva 1982 | |
| 18 | 18y 31d | Bastad 1974 | |
| 19 | 18y 42d | Barcelona 1982 | |
| 20 | 18y 62d | Tokyo-1 1982 |
