16‑Sep‑1996 | Bad Saarow CH | Clay | R32 | 246 | 105 | (3)Magnus Norman [SWE] d. Kowalski | 6-3 3-6 6-1 | | | | | | | | | |
9‑Sep‑1996 | Budapest2 CH | Clay | R32 | 244 | 222 | Stephane Huet [FRA] d. Kowalski | 6-7 6-3 6-4 | | | | | | | | | |
2‑Sep‑1996 | Prostejov CH | Clay | R32 | 247 | 87 | (4)Andrei Chesnokov [RUS] d. Kowalski | 6-4 7-5 | | | | | | | | | |
5‑Aug‑1996 | Cincinnati Masters | Hard | R32 | 217 | 2 | (2)Thomas Muster [AUT] d. (Q)Kowalski | 6-1 6-1 | | 0.51 | 6.8% | 2.3% | 54.5% | 45.8% | 45.0% | 5/10 | 0:51 |
5‑Aug‑1996 | Cincinnati Masters | Hard | R64 | 217 | 66 | (Q)Kowalski d. Nicklas Kulti [SWE] | 3-6 7-5 6-3 | | 1.08 | 23.7% | 3.1% | 53.6% | 78.8% | 53.3% | 5/7 | 1:58 |
29‑Jul‑1996 | Lexington CH | Hard | QF | 231 | 181 | (8)Tamer El Sawy [EGY] d. Kowalski | 7-5 6-1 | | | | | | | | | |
29‑Jul‑1996 | Lexington CH | Hard | R16 | 231 | 130 | Kowalski d. (2)Roberto Jabali [BRA] | 6-4 6-4 | | | | | | | | | |
29‑Jul‑1996 | Lexington CH | Hard | R32 | 231 | 199 | Kowalski d. Mose Navarra [ITA] | 7-6 1-6 6-4 | | | | | | | | | |
22‑Jul‑1996 | Kitzbuhel | Clay | R32 | 258 | 52 | (14)Sjeng Schalken [NED] d. (Q)Kowalski | 7-6(5) 6-3 | | 0.89 | 4.6% | 1.5% | 52.3% | 55.9% | 58.1% | 3/6 | 1:25 |
22‑Jul‑1996 | Kitzbuhel | Clay | R64 | 258 | 120 | (Q)Kowalski d. Joao Cunha Silva [POR] | 6-3 7-6(4) | | 1.21 | 6.6% | 1.3% | 53.9% | 61.0% | 57.1% | 6/9 | 1:45 |
15‑Jul‑1996 | Scheveningen CH | Clay | R32 | 258 | 175 | Juan Albert Viloca Puig [ESP] d. Kowalski | 6-3 6-4 | | | | | | | | | |
1‑Jul‑1996 | Ulm CH | Clay | R32 | 196 | 124 | (6)Marcos Aurelio Gorriz [ESP] d. Kowalski | 6-2 6-2 | | | | | | | | | |
24‑Jun‑1996 | Braunschweig CH | Clay | R32 | 196 | 132 | Lionel Roux [FRA] d. Kowalski | 6-1 6-4 | | | | | | | | | |
17‑Jun‑1996 | Eisenach CH | Clay | R16 | 162 | 215 | Lars Jonsson [SWE] d. (3)Kowalski | 6-2 5-7 6-3 | | | | | | | | | |
17‑Jun‑1996 | Eisenach CH | Clay | R32 | 162 | 487 | (3)Kowalski d. (Q)Thomas Gollwitzer [GER] | 6-2 4-6 6-4 | | | | | | | | | |
3‑Jun‑1996 | Furth CH | Clay | R32 | 156 | 59 | (2)Christian Ruud [NOR] d. Kowalski | 7-5 6-4 | | | | | | | | | |
27‑May‑1996 | Szczecin CH | Clay | R32 | 156 | 399 | (Q)Oscar Burrieza [ESP] d. (3)Kowalski | 7-5 6-4 | | | | | | | | | |
13‑May‑1996 | Dresden CH | Clay | R32 | 153 | 135 | Chris Wilkinson [GBR] d. Kowalski | 6-4 6-4 | | | | | | | | | |
8‑Apr‑1996 | Napoli CH | Clay | R32 | 142 | 242 | (WC)Juan Albert Viloca Puig [ESP] d. Kowalski | 6-3 7-5 | | | | | | | | | |
1‑Apr‑1996 | West Bloomfield CH | Hard | R16 | 145 | 327 | Libor Nemecek [CZE] d. (4)Kowalski | 6-2 6-1 | | | | | | | | | |
1‑Apr‑1996 | West Bloomfield CH | Hard | R32 | 145 | 340 | (4)Kowalski d. (WC)Steve Herdoiza [USA] | 6-4 6-1 | | | | | | | | | |
18‑Mar‑1996 | Miami Masters | Hard | R64 | 144 | 19 | (17)Malivai Washington [USA] d. Kowalski | 6-3 2-6 6-4 | | 0.78 | 8.2% | 1.0% | 60.2% | 69.5% | 46.2% | 5/8 | 1:45 |
18‑Mar‑1996 | Miami Masters | Hard | R128 | 144 | 196 | Kowalski d. (WC)Aaron Krickstein [USA] | 6-3 3-6 7-5 | | 1.02 | 6.7% | 1.9% | 57.7% | 63.3% | 54.5% | 6/10 | 1:53 |
4‑Mar‑1996 | Indian Wells CH | Hard | R32 | 140 | 62 | (1)Jason Stoltenberg [AUS] d. Kowalski | 6-4 7-5 | | | | | | | | | |
19‑Feb‑1996 | Cherbourg CH | Hard | R16 | 145 | 175 | (WC)Thierry Champion [FRA] d. Kowalski | 6-4 2-6 6-3 | | | | | | | | | |
19‑Feb‑1996 | Cherbourg CH | Hard | R32 | 145 | 146 | Kowalski d. Frederic Vitoux [FRA] | 6-4 6-4 | | | | | | | | | |
5‑Feb‑1996 | Wolfsburg CH | Carpet | R32 | 145 | 161 | Joost Winnink [NED] d. (8)Kowalski | 6-2 6-3 | | | | | | | | | |
29‑Jan‑1996 | Lippstadt CH | Carpet | R32 | 144 | 165 | Sandon Stolle [AUS] d. Kowalski | 6-4 6-3 | | | | | | | | | |
22‑Jan‑1996 | Heilbronn CH | Carpet | QF | 151 | 130 | Chris Wilkinson [GBR] d. Kowalski | 7-5 6-4 | | | | | | | | | |
22‑Jan‑1996 | Heilbronn CH | Carpet | R16 | 151 | 221 | Kowalski d. Radomir Vasek [CZE] | 6-2 6-4 | | | | | | | | | |
22‑Jan‑1996 | Heilbronn CH | Carpet | R32 | 151 | 150 | Kowalski d. Thierry Guardiola [FRA] | 3-6 6-4 7-6 | | | | | | | | | |