| 12‑Oct‑1998 | San Diego CH | Hard | R32 | 230 | 225 | Paul Goldstein [USA] d. Stolle | 7-5 6-3 | | | | | | | | | |
| 28‑Sep‑1998 | Dallas CH | Hard | QF | 238 | 488 | (Q)Lars Rehmann [GER] d. Stolle | 7-6 6-3 | | | | | | | | | |
| 28‑Sep‑1998 | Dallas CH | Hard | R16 | 238 | 257 | Stolle d. Jared Palmer [USA] | 7-5 7-6 | | | | | | | | | |
| 28‑Sep‑1998 | Dallas CH | Hard | R32 | 238 | 189 | Stolle d. Jonathan Stark [USA] | 7-6 6-0 | | | | | | | | | |
| 27‑Jul‑1998 | Los Angeles | Hard | QF | 265 | 13 | (5)Andre Agassi [USA] d. (LL)Stolle | 7-6(2) 6-2 | | 0.65 | 10.0% | 1.4% | 58.6% | 63.4% | 48.3% | 4/7 | 1:20 |
| 27‑Jul‑1998 | Los Angeles | Hard | R16 | 265 | 55 | (LL)Stolle d. Andrew Ilie [AUS] | 6-3 7-6(6) | | 1.51 | 9.7% | 0.0% | 67.7% | 81.0% | 65.0% | 1/2 | 1:26 |
| 27‑Jul‑1998 | Los Angeles | Hard | R32 | 265 | 646 | (LL)Stolle d. (Q)Taylor Dent [USA] | 6-3 6-2 | | 1.65 | 9.4% | 3.8% | 69.8% | 81.1% | 56.3% | 2/2 | 0:55 |
| 20‑Jul‑1998 | Washington | Hard | R64 | 240 | 211 | (Q)David Nainkin [RSA] d. Stolle | 6-2 7-6(4) | | 0.75 | 15.6% | 9.1% | 55.8% | 67.4% | 26.5% | 2/7 | 1:29 |
| 6‑Jul‑1998 | Newport | Grass | R32 | 208 | 170 | Neville Godwin [RSA] d. Stolle | 7-6(5) 7-5 | | 0.84 | 7.4% | 5.3% | 61.7% | 63.8% | 50.0% | 5/8 | 1:36 |
| 8‑Jun‑1998 | Queen's Club | Grass | R64 | 136 | 154 | (WC)Chris Wilkinson [GBR] d. Stolle | 7-5 3-6 7-5 | | 0.97 | 7.6% | 9.3% | 51.7% | 63.9% | 42.1% | 10/17 | 2:18 |
| 1‑Jun‑1998 | Surbiton CH | Grass | R16 | 132 | 300 | (Q)Wayne Arthurs [AUS] d. (7)Stolle | 6-3 6-2 | | | | | | | | | |
| 1‑Jun‑1998 | Surbiton CH | Grass | R32 | 132 | 150 | (7)Stolle d. Brian Macphie [USA] | 6-4 7-5 | | | | | | | | | |
| 4‑May‑1998 | Coral Springs | Clay | R32 | 121 | 79 | (5)Mikael Tillstrom [SWE] d. Stolle | 6-4 3-6 6-1 | | 0.85 | 9.6% | 3.6% | 60.2% | 72.0% | 45.5% | 10/13 | 1:42 |
| 13‑Apr‑1998 | Tokyo | Hard | R16 | 118 | 89 | (12)Daniel Vacek [CZE] d. Stolle | 7-5 6-3 | | 0.93 | 9.1% | 7.3% | 54.5% | 80.0% | 20.0% | 2/7 | 1:26 |
| 13‑Apr‑1998 | Tokyo | Hard | R32 | 118 | 62 | Stolle d. (5)Vincent Spadea [USA] | 6-3 6-0 | | 2.47 | 7.3% | 4.9% | 65.9% | 96.3% | 42.9% | 0/0 | 0:54 |
| 13‑Apr‑1998 | Tokyo | Hard | R64 | 118 | 271 | Stolle d. (WC)Takao Suzuki [JPN] | 6-2 6-3 | | 1.50 | 7.3% | 3.6% | 61.8% | 79.4% | 47.6% | 0/1 | 1:05 |
| 6‑Apr‑1998 | Hong Kong | Hard | QF | 127 | 43 | (3)Thomas Johansson [SWE] d. Stolle | 7-6(6) 7-5 | | 0.97 | 16.7% | 8.3% | 62.5% | 80.0% | 51.9% | 3/4 | 1:43 |
| 6‑Apr‑1998 | Hong Kong | Hard | R16 | 127 | 244 | Stolle d. (Q)Ben Ellwood [AUS] | 7-6(5) 6-4 | | 1.18 | 6.3% | 5.0% | 57.5% | 82.6% | 47.1% | 5/6 | 1:41 |
| 6‑Apr‑1998 | Hong Kong | Hard | R32 | 127 | 62 | Stolle d. (5)Vincent Spadea [USA] | 6-1 6-3 | | 1.74 | 7.1% | 2.4% | 47.6% | 80.0% | 59.1% | 0/1 | 0:58 |
| 16‑Mar‑1998 | Miami Masters | Hard | R128 | 121 | 100 | Michael Tebbutt [AUS] d. Stolle | 6-7(4) 6-2 7-5 | | 0.83 | 3.1% | 4.1% | 52.6% | 60.8% | 56.5% | 4/10 | 1:56 |
| 23‑Feb‑1998 | Philadelphia | Hard | R32 | 99 | 61 | Jeff Tarango [USA] d. (Q)Stolle | 7-5 6-1 | | 0.66 | 11.3% | 4.2% | 59.2% | 59.5% | 48.3% | 4/8 | 1:17 |
| 16‑Feb‑1998 | Memphis | Hard | R64 | 98 | 167 | (WC)Jan Michael Gambill [USA] d. Stolle | 6-3 6-7(2) 6-4 | | 0.80 | 6.3% | 3.2% | 65.1% | 65.9% | 56.8% | 11/14 | 2:06 |
| 9‑Feb‑1998 | Dubai | Hard | R32 | 100 | 16 | (7)Thomas Muster [AUT] d. (WC)Stolle | 6-3 6-7(4) 6-4 | | 0.77 | 5.8% | 2.5% | 62.8% | 68.4% | 46.7% | 14/18 | 2:14 |
| 19‑Jan‑1998 | Australian Open | Hard | R128 | 96 | 46 | Guillaume Raoux [FRA] d. Stolle | 2-6 6-3 4-6 6-2 6-0 | | 0.86 | 3.7% | 1.5% | 78.7% | 57.0% | 37.9% | 3/13 | 2:25 |