Head to head
Rivalry summary
Jan Gunnarsson and Marko Ostoja met 2 times on the ATP tour between 1984 and 1984. Their head-to-head is level at 1–1. By surface, they are level 1–1 on hard.
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Hard
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Jan Gunnarsson's wins on the left · Marko Ostoja's on the right · bar lengths share one scale
All meetings (2)
| 1984 | Vienna | Hard | R16 | Jan Gunnarsson | 7-5 6-4 |
| 1984 | Cologne | Hard | QF | Marko Ostoja | 6-1 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.