Head to head
2
Hard
0
0
Clay
2
Sam Querrey's wins on the left · Guido Pella's on the right · bar lengths share one scale
All meetings (4)
| 2018 | Chengdu | Hard | R32 | Sam Querrey | 7-6(6) 6-1 |
| 2018 | Geneva | Clay | R16 | Guido Pella | 7-5 6-7(6) 7-6(4) |
| 2018 | Houston | Clay | R16 | Guido Pella | 2-6 7-6(4) 7-6(3) |
| 2013 | US Open | Hard | R128 | Sam Querrey | 7-6(3) 4-6 6-1 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.