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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 16y 33d | Bastad 1972 | |
| 2 | 16y 201d | Hilversum 1984 | |
| 3 | 16y 261d | Prague 1996 | |
| 4 | 16y 277d | Forest Hills WCT 1984 | |
| 5 | 16y 284d | Rome 1984 | |
| 6 | 16y 285d | Palermo 1968 | |
| 7 | 16y 292d | Naples 1968 | |
| 8 | 16y 295d | St. Vincent 1986 | |
| 9 | 16y 299d | Reggio Calabria 1968 | |
| 10 | 16y 303d | Buenos Aires 1986 | |
| 11 | 16y 314d | Monte-Carlo 1973 | |
| 12 | 16y 345d | South Orange 1981 | |
| 13 | 16y 349d | Boston 1984 | |
| 14 | 16y 356d | Washington 1984 | |
| 15 | 17y 8d | Geneva 1991 | |
| 16 | 17y 20d | Buenos Aires 1986 | |
| 17 | 17y 32d | Bastad 1973 | |
| 18 | 17y 33d | Bastad 2003 | |
| 19 | 17y 39d | Venice 1982 | |
| 20 | 17y 46d | Geneva 1984 |
