Head to head
1
Hard
0
0
Grass
1
Donald Young's wins on the left · Martin Klizan's on the right · bar lengths share one scale
All meetings (2)
| 2014 | Eastbourne | Grass | R16 | Martin Klizan | 7-6(4) 6-4 |
| 2013 | US Open | Hard | R128 | Donald Young | 6-1 6-0 6-1 |
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.