By surface
| Surface | Joao Marques | Keith Harrietha |
|---|---|---|
| Grass | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1969-07-07 | WTA | Newport Wales | Quarterfinal | Grass | Margaret Court | 9-11 | 3-6 |
| Surface | Joao Marques | Keith Harrietha |
|---|---|---|
| Grass | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1969-07-07 | WTA | Newport Wales | Quarterfinal | Grass | Margaret Court | 9-11 | 3-6 |