Head to head
3
Hard
0
0
Clay
1
Jakob Hlasek's wins on the left · Jimmy Arias's on the right · bar lengths share one scale
All meetings (4)
| 1991 | Cincinnati Masters | Hard | R64 | Jakob Hlasek | 6-1 6-1 |
| 1990 | Cincinnati Masters | Hard | R32 | Jakob Hlasek | 3-6 6-2 6-3 |
| 1990 | Canada Masters | Hard | R16 | Jakob Hlasek | 7-5 6-1 |
| 1990 | Hamburg Masters | Clay | R32 | Jimmy Arias | 6-4 2-6 6-2 |
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.