Head to head
Rivalry summary
Stefan Simonsson and Jairo Velasco Sr. met 2 times on the ATP tour between 1983 and 1983. Their head-to-head is level at 1–1. By surface, they are level 1–1 on clay.
1
Clay
1
Stefan Simonsson's wins on the left · Jairo Velasco Sr.'s on the right · bar lengths share one scale
All meetings (2)
| 1983 | Madrid | Clay | R32 | Stefan Simonsson | 6-4 6-3 |
| 1983 | Lisbon | Clay | R32 | Jairo Velasco Sr. | 7-5 1-6 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.