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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 17y 96d | Roland Garros 1989 | |
| 2 | 17y 214d | Wimbledon 1985 | |
| 3 | 17y 274d | Roland Garros 1982 | |
| 4 | 17y 361d | Roland Garros 1974 | |
| 5 | 18y 24d | Roland Garros 1988 | |
| 6 | 18y 122d | US Open 1988 | |
| 7 | 18y 124d | Wimbledon 1977 | |
| 8 | 18y 213d | Wimbledon 1986 | |
| 9 | 18y 266d | Roland Garros 1993 | |
| 10 | 18y 273d | Roland Garros 1983 | |
| 11 | 18y 277d | US Open 1986 | |
| 12 | 18y 285d | Wimbledon 1990 | |
| 13 | 18y 354d | Roland Garros 2005 | |
| 14 | 18y 362d | Roland Garros 1975 | |
| 15 | 19y 13d | US Open 1983 | |
| 16 | 19y 15d | US Open 1990 | |
| 17 | 19y 29d | Wimbledon 1984 | |
| 18 | 19y 81d | US Open 1975 | |
| 19 | 19y 93d | US Open 1984 | |
| 20 | 19y 98d | Australian Open 1983 |
