Head to head
0
Clay
1
1
Grass
0
Robert McKinley's wins on the left · Jim Osborne's on the right · bar lengths share one scale
All meetings (2)
| 1971 | Cincinnati | Clay | R64 | Jim Osborne | 3-6 7-6 6-4 |
| 1969 | Southampton | Grass | R64 | Robert McKinley | 6-4 6-4 |
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.