Head to head
3
Hard
1
4
Clay
1
Juan Monaco's wins on the left · Guillermo Garcia-Lopez's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (9)
| 2015 | Miami Masters | Hard | R32 | Juan Monaco | 7-5 6-4 |
| 2014 | Gstaad | Clay | R16 | Juan Monaco | 6-2 2-6 6-4 |
| 2013 | Gstaad | Clay | R16 | Juan Monaco | 6-1 6-2 |
| 2012 | US Open | Hard | R128 | Guillermo Garcia-Lopez | 3-6 1-6 6-4 7-6(6) 7-6(3) |
| 2012 | Stuttgart | Clay | SF | Juan Monaco | 6-3 3-6 7-5 |
| 2010 | Indian Wells Masters | Hard | R16 | Juan Monaco | 3-6 6-2 6-1 |
| 2009 | Tokyo | Hard | R32 | Juan Monaco | 5-0 RET |
| 2008 | Valencia | Clay | R16 | Juan Monaco | 6-4 6-4 |
| 2005 | Costa do Sauipe | Clay | R32 | Guillermo Garcia-Lopez | 6-1 6-3 |
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.