| 1991-11-04 | Sao Paulo | Hard | R32 | 124 |  Danilo Marcelino (WC) | 139 |  Luis Herrera | 6-1 4-6 6-2 | H2H | 3 | 93 | 0 | 2 | 56.2% | 66.0% | 66.7% | 6/7 |
| 1991-10-28 | Buzios | Hard | R16 | 29 |  Javier Sanchez (3) | 124 | Luis Herrera | 2-6 6-2 7-5 | H2H | 3 | 105 | 1 | 0 | 73.9% | 58.8% | 62.5% | 8/12 |
| 1991-10-28 | Buzios | Hard | R32 | 124 | Luis Herrera | 149 |  Nicolas Pereira (Q) | 7-5 6-3 | H2H | 3 | 80 | 0 | 3 | 58.5% | 76.3% | 37.0% | 7/10 |
| 1991-10-21 | Guaruja | Hard | R32 | 65 | Carlos Costa | 123 | Luis Herrera | 7-5 3-6 6-4 | H2H | 3 | 120 | 5 | 4 | 54.5% | 63.6% | 47.8% | 5/10 |
| 1991-10-07 | Tokyo Indoor | Carpet | R32 | 8 |  Andre Agassi (4) | 111 | Luis Herrera | 7-5 6-1 | H2H | 3 | 66 | 0 | 0 | 71.7% | 74.4% | 76.5% | 4/4 |
| 1991-10-07 | Tokyo Indoor | Carpet | R64 | 111 | Luis Herrera | 91 | Danilo Marcelino | 3-6 6-1 6-4 | H2H | 3 | 123 | 1 | 0 | 70.0% | 63.3% | 71.4% | 2/4 |
| 1991-09-30 | Sydney Indoor | Hard | R64 | 109 | Danilo Marcelino | 91 | Luis Herrera | 6-2 6-1 | H2H | 3 | 48 | 4 | 0 | 67.4% | 82.8% | 64.3% | 0/0 |
| 1991-09-20 | Davis Cup WG PO: MEX vs NED | Clay | RR | 44 |  Mark Koevermans | 90 | Luis Herrera | 6-3 6-4 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 1991-09-20 | Davis Cup WG PO: MEX vs NED | Clay | RR | 31 | Paul Haarhuis | 90 | Luis Herrera | 6-3 6-3 | H2H | 3 | - | - | - | - | - | - | - |
| 1991-08-26 | US Open | Hard | R128 | 21 |  Alexander Volkov | 90 | Luis Herrera | 7-6(5) 6-3 3-6 6-4 | H2H | 5 | 160 | 7 | 3 | 63.4% | 73.1% | 51.1% | 0/4 |
