Head to head
2
Hard
0
1
Grass
0
Jack Sock's wins on the left · Lukas Lacko's on the right · bar lengths share one scale
All meetings (3)
| 2016 | Washington | Hard | R32 | Jack Sock | 7-6(1) 6-4 |
| 2015 | Newport | Grass | R16 | Jack Sock | 3-6 7-6(4) 6-4 |
| 2014 | Atlanta | Hard | QF | Jack Sock | 7-6(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.