Head to head
Rivalry summary
J. Collins and Don McCormick met 1 times on the ATP tour between 1972 and 1972. Don McCormick leads the head-to-head 1–0 against J. Collins.
0
Grass
1
J. Collins's wins on the left · Don McCormick's on the right · bar lengths share one scale
All meetings (1)
| 1972 | Adelaide-1 | Grass | R32 | Don McCormick | 6-2 3-6 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.