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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 18y 53d | Masters 1985 | |
| 2 | 19y 9d | Masters 1986 | |
| 3 | 19y 76d | ATP Tour World Championships 1993 | |
| 4 | 19y 140d | Masters 1983 | |
| 5 | 19y 176d | Masters 1975 | |
| 6 | 19y 328d | Masters 1978 | |
| 7 | 20y 86d | Masters 1972 | |
| 8 | 20y 92d | ATP Tour World Championships 1991 | |
| 9 | 20y 139d | Masters 1984 | |
| 10 | 20y 162d | Masters Cup 2006 |
