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| Rank | Player | Age | Tournament |
|---|---|---|---|
| 1 | 14y 201d | Brisbane 1970 | |
| 2 | 15y 227d | Beckenham 1969 | |
| 3 | 16y 47d | Brisbane 1970 | |
| 4 | 16y 50d | Queen's Club 1971 | |
| 5 | 16y 78d | Australian Championships 1968 | |
| 6 | 16y 215d | Brisbane 1969 | |
| 7 | 16y 215d | Wimbledon 1984 | |
| 8 | 16y 219d | Brisbane 1972 | |
| 9 | 16y 226d | Beckenham 1970 | |
| 10 | 16y 253d | Newport-1 1970 |
