Head to head
1
Hard
0
1
Clay
0
2
Carpet
0
Roscoe Tanner's wins on the left · Jim Delaney's on the right · bar lengths share one scale
All meetings (4)
| 1979 | Hong Kong | Hard | R32 | Roscoe Tanner | 6-0 6-1 |
| 1977 | San Jose | Carpet | R16 | Roscoe Tanner | 7-5 4-6 6-4 |
| 1976 | Perth | Carpet | R32 | Roscoe Tanner | 6-1 6-4 |
| 1976 | US Open | Clay | R64 | Roscoe Tanner | 7-6 7-6 |
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.