Head to head
1
Hard
4
0
Grass
1
3
Carpet
5
Pierre Barthes's wins on the left · Cliff Drysdale's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (14)
| 1971 | Wembley | Carpet | R32 | Cliff Drysdale | 6-1 6-3 |
| 1970 | St. Louis | Hard | R32 | Pierre Barthes | 6-2 3-6 6-2 |
| 1970 | Durban | Hard | R16 | Cliff Drysdale | 7-9 6-3 9-7 |
| 1968 | Cape Town WCT | Hard | SF | Cliff Drysdale | 8-2 RET |
| 1968 | East London WCT | Hard | SF | Cliff Drysdale | 11-9 |
| 1968 | Johannesburg WCT | Hard | QF | Cliff Drysdale | 6-0 8-6 |
| 1968 | Newport WCT | Grass | RR | Cliff Drysdale | 21-18 21-15 |
| 1968 | Buffalo WCT | Carpet | 3rd/4th | Pierre Barthes | 23-31 31-30 5-1 |
| 1968 | Fresno WCT | Carpet | QF | Cliff Drysdale | 21-11 21-17 |
| 1968 | Los Altos Hills WCT | Carpet | QF | Pierre Barthes | 31-29 26-31 5-4 |
| 1968 | Tulsa WCT | Carpet | RR | Cliff Drysdale | 31-25 31-24 |
| 1968 | Miami WCT | Carpet | 3rd/4th | Pierre Barthes | 16-31 31-20 5-1 |
| 1968 | WCT World Cup | Carpet | RR | Cliff Drysdale | 31-18 31-28 |
| 1968 | Sydney WCT | Carpet | RR | Cliff Drysdale | 89-72 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.