Head to head
0
Hard
1
1
Grass
1
Roy Barth's wins on the left · Jim Osborne's on the right · bar lengths share one scale
All meetings (3)
| 1970 | Haverford | Grass | R32 | Jim Osborne | 7-5 7-5 |
| 1969 | Los Angeles-2 | Hard | R16 | Jim Osborne | 6-4 5-7 11-9 |
| 1969 | Boston-2 | Grass | R32 | Roy Barth | 20-18 6-2 |
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.