| 1998-10-05 | Shanghai | Hard | R32 | 65 |  Paul Haarhuis (5) | 267 |  Oscar Burrieza-Lopez (Q) | 6-3 6-4 | H2H | 3 | 72 | 4 | 2 | 55.0% | 72.7% | 59.3% | 4/5 |
| 1998-09-14 | Tashkent | Hard | R32 | 81 | Sjeng Schalken | 193 | Oscar Burrieza-Lopez | 6-4 6-7(5) 7-6(5) | H2H | 3 | 137 | 2 | 5 | 64.6% | 69.9% | 50.0% | 3/7 |
| 1998-07-27 | Los Angeles | Hard | R32 | 69 |  Kenneth Carlsen | 179 | Oscar Burrieza-Lopez (LL) | 7-5 6-4 | H2H | 3 | 89 | 8 | 1 | 47.2% | 88.0% | 78.6% | 0/0 |
| 1998-07-20 | Washington | Hard | R64 | 57 |  Gianluca Pozzi (11) | 171 | Oscar Burrieza-Lopez | 4-6 6-4 6-0 | H2H | 3 | 109 | 3 | 1 | 56.3% | 79.6% | 39.5% | 7/9 |
| 1998-07-06 | Newport | Grass | R32 | 68 |  Scott Draper (6) | 149 | Oscar Burrieza-Lopez | 6-3 7-5 | H2H | 3 | 68 | 9 | 4 | 64.5% | 85.0% | 50.0% | 4/5 |
| 1998-04-13 | Tokyo | Hard | R64 | 98 |  Alex O'Brien | 131 | Oscar Burrieza-Lopez | 6-2 6-0 | H2H | 3 | 62 | 7 | 1 | 74.5% | 71.4% | 75.0% | 2/2 |
| 1998-04-06 | Hong Kong | Hard | QF | 111 |  Sebastien Lareau | 145 | Oscar Burrieza-Lopez | 6-1 7-6(4) | H2H | 3 | 94 | 2 | 4 | 60.9% | 61.9% | 55.6% | 2/4 |
| 1998-04-06 | Hong Kong | Hard | R16 | 145 | Oscar Burrieza-Lopez | 68 |  Martin Damm (6) | 6-4 6-4 | H2H | 3 | 95 | 7 | 7 | 46.2% | 66.7% | 52.4% | 5/7 |
| 1998-04-06 | Hong Kong | Hard | R32 | 145 | Oscar Burrieza-Lopez | 97 | Michael Tebbutt | 6-3 7-6(3) | H2H | 3 | 101 | 8 | 19 | 38.4% | 78.6% | 51.1% | 7/9 |
| 1998-03-16 | Miami Masters | Hard | R128 | 124 | Jonathan Stark | 148 | Oscar Burrieza-Lopez (LL) | 6-3 6-3 | H2H | 3 | 71 | 9 | 0 | 64.8% | 74.3% | 68.4% | 2/2 |
