Head to head
1
Hard
1
1
Clay
0
1
Grass
0
Mark Edmondson's wins on the left · Jim Delaney's on the right · bar lengths share one scale
All meetings (4)
| 1982 | Hilton Head WCT | Clay | R32 | Mark Edmondson | 6-1 6-1 |
| 1977 | Los Angeles-2 | Hard | R64 | Mark Edmondson | 6-1 4-6 6-0 |
| 1976 | Sydney-1 | Hard | SF | Jim Delaney | 2-6 6-3 6-3 |
| 1976 | Brisbane | Grass | R16 | Mark Edmondson | 6-3 6-3 |
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.