| 2008-11-21 | Davis Cup WG F: ARG vs ESP | Hard | RR | 31 |  Feliciano Lopez | 9 |  Juan Martin del Potro | 4-6 7-6(2) 7-6(4) 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 2008-11-09 | Masters Cup | Hard | RR | 8 | Juan Martin del Potro | 7 |  Jo-Wilfried Tsonga | 7-6(4) 7-6(5) | H2H | 3 | 111 | 5 | 3 | 68.0% | 82.4% | 54.2% | 2/4 |
| 2008-11-09 | Masters Cup | Hard | RR | 5 |  Nikolay Davydenko | 8 | Juan Martin del Potro | 6-3 6-2 | H2H | 3 | 87 | 5 | 1 | 53.2% | 76.0% | 72.7% | 2/3 |
| 2008-11-09 | Masters Cup | Hard | RR | 3 |  Novak Djokovic | 8 | Juan Martin del Potro | 7-5 6-3 | H2H | 3 | 117 | 8 | 4 | 54.2% | 74.4% | 51.5% | 3/5 |
| 2008-10-26 | Paris Masters | Hard | R16 | 8 | David Nalbandian (8) | 9 | Juan Martin del Potro (9) | 6-4 6-0 | H2H | 3 | 66 | 6 | 2 | 63.8% | 83.3% | 47.1% | 1/2 |
| 2008-10-26 | Paris Masters | Hard | R32 | 9 | Juan Martin del Potro (9) | 37 |  Mario Ancic | 6-0 6-4 | H2H | 3 | 78 | 3 | 0 | 60.0% | 76.7% | 60.0% | 1/1 |
| 2008-10-20 | Basel | Hard | SF | 8 | David Nalbandian (2) | 9 | Juan Martin del Potro (3) | 6-4 6-4 | H2H | 3 | 80 | 7 | 1 | 75.4% | 74.4% | 57.1% | 2/3 |
| 2008-10-20 | Basel | Hard | QF | 9 | Juan Martin del Potro (3) | 21 | Igor Andreev (6) | 6-4 7-5 | H2H | 3 | 114 | 5 | 1 | 50.7% | 80.0% | 61.8% | 3/3 |
| 2008-10-20 | Basel | Hard | R16 | 9 | Juan Martin del Potro (3) | 135 |  Stephane Bohli (WC) | 6-3 6-3 | H2H | 3 | 66 | 6 | 1 | 59.6% | 82.1% | 73.7% | 0/0 |
| 2008-10-20 | Basel | Hard | R32 | 9 | Juan Martin del Potro (3) | 267 | George Bastl (Q) | 6-2 6-4 | H2H | 3 | 83 | 6 | 2 | 68.2% | 93.3% | 42.9% | 1/2 |
