Head to head
Rivalry summary
Jaime Fillol Sr. and Nicholas Kalogeropoulos met 2 times on the ATP tour between 1969 and 1971. Their head-to-head is level at 1–1. By surface, they are level 1–1 on grass.
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Grass
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Jaime Fillol Sr.'s wins on the left · Nicholas Kalogeropoulos's on the right · bar lengths share one scale
All meetings (2)
| 1971 | Eastbourne | Grass | R32 | Jaime Fillol Sr. | 4-6 6-1 10-8 |
| 1969 | Wimbledon | Grass | R128 | Nicholas Kalogeropoulos | 6-2 6-2 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.