Head to head
1
Hard
2
1
Clay
0
0
Grass
1
4
Carpet
3
Cliff Drysdale's wins on the left · Dennis Ralston's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (12)
| 1976 | Columbus WCT | Carpet | R16 | Cliff Drysdale | 6-2 6-1 |
| 1971 | Fort Worth WCT | Hard | QF | Cliff Drysdale | 7-5 3-6 7-6 |
| 1971 | Louisville WCT | Clay | QF | Cliff Drysdale | 3-6 6-3 6-3 |
| 1970 | Wembley | Carpet | QF | Cliff Drysdale | 9-8 6-8 6-3 |
| 1970 | Atlanta | Hard | QF | Dennis Ralston | 6-4 6-8 6-4 |
| 1969 | Queen's Club | Grass | R16 | Dennis Ralston | 6-3 6-1 |
| 1968 | Baltimore WCT | Carpet | SF | Dennis Ralston | 11-9 11-9 |
| 1968 | Evansville WCT | Carpet | QF | Dennis Ralston | 31-29 |
| 1968 | Tulsa WCT | Carpet | F | Cliff Drysdale | 31-24 |
| 1968 | New Orleans WCT | Carpet | RR | Cliff Drysdale | 31-24 31-29 |
| 1968 | Houston WCT | Carpet | RR | Dennis Ralston | 31-28 31-19 |
| 1968 | Shreveport WCT | Hard | QF | Dennis Ralston | 31-12 |
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.