In tennis history there have been a number of notable rivalries.
[1][2][3][4] For the pre-1991 eras, complete statistics on all matches is difficult to obtain in definitive form.
In many years there were significant numbers of minor events and exhibition matches outside the designated tours, some of which were not reported in newspapers or recorded by the respective amateur or professional tour management.
The approximate nature of these results should be understood and kept in mind while reading this data.
≈ minimum confirmed (early records are incomplete)