Head to head
1
Hard
3
0
Clay
1
0
Carpet
1
Jurgen Melzer's wins on the left · Juan Martin del Potro's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 2009 | Shanghai Masters | Hard | R32 | Jurgen Melzer | 7-5 2-1 RET |
| 2009 | US Open | Hard | R64 | Juan Martin del Potro | 7-6(6) 6-3 6-3 |
| 2009 | Indian Wells Masters | Hard | R32 | Juan Martin del Potro | 6-2 2-6 7-6(2) |
| 2008 | Kitzbuhel | Clay | F | Juan Martin del Potro | 6-2 6-1 |
| 2007 | US Open | Hard | R64 | Juan Martin del Potro | 6-3 6-1 6-4 |
| 2007 | Davis Cup WG R1: AUT vs ARG | Carpet | RR | Juan Martin del Potro | 7-6(4) 3-6 6-4 4-6 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.