Head to head
1
Hard
0
0
Clay
1
0
Carpet
3
Mike Cahill's wins on the left · Andrew Pattison's on the right · bar lengths share one scale
All meetings (5)
| 1981 | US Open | Hard | R64 | Mike Cahill | 6-4 6-1 7-6 |
| 1981 | Memphis | Carpet | R64 | Andrew Pattison | 7-6 6-2 |
| 1980 | Birmingham WCT | Carpet | R32 | Andrew Pattison | 6-0 7-5 |
| 1978 | San Francisco | Carpet | R32 | Andrew Pattison | 6-2 6-4 |
| 1977 | North Conway | Clay | R64 | Andrew Pattison | 7-5 6-7 6-3 |
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.