Head to head
3
Clay
2
Juan Monaco's wins on the left · Nicolas Massu's on the right · bar lengths share one scale
All meetings (5)
| 2010 | Santiago | Clay | R32 | Juan Monaco | 6-3 6-4 |
| 2007 | Acapulco | Clay | R32 | Nicolas Massu | 7-6(4) 7-5 |
| 2006 | Costa do Sauipe | Clay | SF | Nicolas Massu | 2-6 6-2 7-5 |
| 2004 | Bastad | Clay | R32 | Juan Monaco | 4-6 6-3 6-2 |
| 2004 | Costa do Sauipe | Clay | R32 | Juan Monaco | 6-4 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.