Head to head
1
Hard
1
0
Clay
4
Sam Querrey's wins on the left · Juan Monaco's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 2016 | Houston | Clay | QF | Juan Monaco | 6-4 6-4 |
| 2015 | Nice | Clay | R16 | Juan Monaco | 6-3 6-1 |
| 2010 | Paris Masters | Hard | R64 | Juan Monaco | 7-6(7) 6-2 |
| 2010 | World Team Championship | Clay | F | Juan Monaco | 1-6 6-2 6-3 |
| 2007 | Cincinnati Masters | Hard | R16 | Sam Querrey | 6-3 7-5 |
| 2007 | Estoril | Clay | R16 | Juan Monaco | 3-6 6-1 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.