| 1998-09-25 | Davis Cup G2 F: URU vs VEN | Clay | RR | 124 |  Marcelo Filippini | 732 |  Kepler Orellana | 6-2 6-3 7-5 | H2H | 5 | - | - | - | - | - | - | - |
| 1998-09-25 | Davis Cup G2 F: URU vs VEN | Clay | RR | 124 | Marcelo Filippini | 360 | Jimy Szymanski | 6-3 6-7(2) 6-3 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 1998-08-31 | US Open | Hard | R64 | 34 |  Magnus Larsson | 139 | Marcelo Filippini | 6-3 6-2 6-2 | H2H | 5 | - | 8 | 4 | 53.7% | 77.3% | 65.8% | 0/1 |
| 1998-08-31 | US Open | Hard | R128 | 139 | Marcelo Filippini | 54 |  Franco Squillari | 7-5(5) 6-0 6-1 | H2H | 5 | 30 | 3 | 0 | 72.9% | 72.6% | 73.9% | 3/3 |
| 1998-08-24 | Boston | Hard | R32 | 24 |  Thomas Muster (5) | 140 | Marcelo Filippini (Q) | 6-0 6-2 | H2H | 3 | 55 | 4 | 1 | 36.1% | 84.6% | 73.9% | 0/0 |
| 1998-07-27 | Kitzbuhel | Clay | R64 | 145 |  Jan Kroslak | 116 | Marcelo Filippini | 2-6 7-6(5) 7-6(5) | H2H | 3 | 143 | 8 | 9 | 62.8% | 65.8% | 37.8% | 14/20 |
| 1998-07-17 | Davis Cup G2 SF: URU vs PER | Clay | RR | 107 | Marcelo Filippini | - |  Americo Tupi Venero | 6-7(1) 7-5 6-3 6-0 | H2H | 5 | - | - | - | - | - | - | - |
| 1998-06-22 | Wimbledon | Grass | R128 | 37 | Magnus Larsson | 105 | Marcelo Filippini | 7-5 6-1 6-4 | H2H | 5 | 96 | 17 | 3 | 74.3% | 84.5% | 44.8% | 5/5 |
| 1998-05-25 | Roland Garros | Clay | R128 | 17 |  Cedric Pioline | 102 | Marcelo Filippini | 6-1 3-6 7-5 6-7(4) 6-4 | H2H | 5 | 231 | 10 | 5 | 61.9% | 71.6% | 53.7% | 11/15 |
| 1998-05-18 | St. Poelten | Clay | R32 | 80 | Marcelo Filippini | 36 | Guillaume Raoux (5) | 6-2 6-2 | H2H | 3 | 63 | 1 | 0 | 77.8% | 61.9% | 75.0% | 3/4 |
