Head to head
1
Hard
1
0
Grass
1
John Yuill's wins on the left · Patricio Cornejo's on the right · bar lengths share one scale
All meetings (3)
| 1975 | Nottingham | Grass | R64 | Patricio Cornejo | 7-5 8-6 |
| 1974 | Los Angeles | Hard | R64 | John Yuill | 3-6 7-5 5-2 RET |
| 1972 | Johannesburg-1 | Hard | R64 | Patricio Cornejo | 6-2 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.