Head to head
1
Grass
0
3
Carpet
0
John Sadri's wins on the left · John Austin's on the right · bar lengths share one scale
All meetings (4)
| 1981 | Denver | Carpet | R16 | John Sadri | 6-3 6-4 |
| 1981 | Monterrey WCT | Carpet | R16 | John Sadri | 6-4 6-1 |
| 1980 | Sydney-2 | Grass | R64 | John Sadri | 6-4 7-6 |
| 1980 | Memphis | Carpet | R64 | John Sadri | 6-3 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.