Head to head
0
Hard
1
2
Clay
2
1
Grass
0
Martin Klizan's wins on the left · Federico Delbonis's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 2020 | Santiago | Clay | R32 | Federico Delbonis | 6-1 7-6(5) |
| 2019 | Monte Carlo Masters | Clay | R64 | Martin Klizan | 7-6(3) 7-5 |
| 2018 | Barcelona | Clay | R64 | Martin Klizan | 6-3 6-7(5) 6-4 |
| 2015 | Rio de Janeiro | Clay | R16 | Federico Delbonis | 6-2 6-1 |
| 2014 | Winston-Salem | Hard | R64 | Federico Delbonis | 7-6(5) 6-4 |
| 2014 | Eastbourne | Grass | R32 | Martin Klizan | 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.