| 25‑Jul‑1994 | Hilversum | Clay | R32 | 17 | 72 | Marcelo Filippini [URU] d. (2)Costa | 7-6(5) 3-1 RET | | 0.73 | 3.6% | 5.5% | 58.2% | 59.4% | 39.1% | 3/6 | 1:14 |
| 26‑Jul‑1993 | Hilversum | Clay | F | 42 | 26 | Costa d. Magnus Gustafsson [SWE] | 6-1 6-2 6-3 | | 2.38 | 9.7% | 0.0% | 67.7% | 78.6% | 80.0% | 0/0 | 1:26 |
| 26‑Jul‑1993 | Hilversum | Clay | SF | 42 | 40 | Costa d. Javier Sanchez [ESP] | 7-6(5) 6-1 | | 1.29 | 5.7% | 0.0% | 52.9% | 83.8% | 45.5% | 3/4 | 1:31 |
| 26‑Jul‑1993 | Hilversum | Clay | QF | 42 | 59 | Costa d. Andrei Cherkasov [RUS] | 6-4 7-5 | | 2.02 | 9.3% | 1.9% | 53.7% | 82.8% | 80.0% | 0/0 | 1:29 |
| 26‑Jul‑1993 | Hilversum | Clay | R16 | 42 | 37 | Costa d. (7)Fabrice Santoro [FRA] | 6-2 6-4 | | 1.64 | 11.1% | 4.4% | 53.3% | 75.0% | 57.1% | 0/2 | 1:14 |
| 26‑Jul‑1993 | Hilversum | Clay | R32 | 42 | 81 | Costa d. Jaime Oncins [BRA] | 7-5 3-6 6-3 | | 1.13 | 4.7% | 0.0% | 66.3% | 70.2% | 48.3% | 8/12 | 2:01 |
| 20‑Jul‑1992 | Hilversum | Clay | R32 | 10 | 66 | Cedric Pioline [FRA] d. (1)Costa | 6-3 6-3 | | 0.70 | 4.9% | 4.9% | 62.3% | 44.7% | 65.2% | 1/5 | 1:19 |
| 23‑Jul‑1990 | Hilversum | Clay | R16 | 158 | 37 | Ronald Agenor [USA] d. (Q)Costa | 7-6 3-6 6-1 | | | | | | | | | |
| 23‑Jul‑1990 | Hilversum | Clay | R32 | 158 | 25 | (Q)Costa d. (5)Marc Rosset [SUI] | 6-2 3-1 RET | | | | | | | | | |