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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 16y 69d | Tel Aviv 1983 | |
| 2 | 16y 216d | San Francisco 1988 | |
| 3 | 16y 284d | Rome 1984 | |
| 4 | 16y 303d | Buenos Aires 1986 | |
| 5 | 16y 314d | Monte-Carlo 1973 | |
| 6 | 16y 349d | Boston 1984 | |
| 7 | 16y 356d | Seoul 1987 | |
| 8 | 16y 356d | Washington 1984 | |
| 9 | 17y 4d | Beckenham 1973 | |
| 10 | 17y 39d | Tel Aviv 1984 | |
| 11 | 17y 46d | Geneva 1984 | |
| 12 | 17y 48d | Auckland 1977 | |
| 13 | 17y 85d | Bangkok 1981 | |
| 14 | 17y 109d | Alamo 1973 | |
| 15 | 17y 151d | Stockholm 1973 | |
| 16 | 17y 165d | Buenos Aires 1973 | |
| 17 | 17y 195d | Munich 1987 | |
| 18 | 17y 197d | Brussels 1982 | |
| 19 | 17y 200d | Queen's Club 1985 | |
| 20 | 17y 200d | Hilversum 1985 |