| # | Date | Promotion | Match |
| 1 | 28.05.1953 |  |
Josef Vavra defeats Karel Istaz Catchen In Berlin - Event @ Berlin, Deutschland |
| 2 | 27.05.1953 | |
Ray Hunter defeats Karel Istaz Catchen In Berlin - Event @ Berlin, Deutschland |
| 3 | 23.05.1953 | |
Jimmy Dula vs. Karel Istaz Catchen In Berlin - Event @ Berlin, Deutschland |
| 4 | 21.05.1953 | |
Karel Istaz defeats Wolfgang Ehrl Catchen In Berlin - Event @ Berlin, Deutschland |
| 5 | 15.05.1953 | |
IK defeats Karel Istaz Catchen In Berlin - Event @ Berlin, Deutschland |
| 6 | 14.05.1953 | |
Karel Istaz defeats Nicola Selenkowitsch Catchen In Berlin - Event @ Berlin, Deutschland |
| 7 | 13.05.1953 | |
Karel Istaz defeats Salvatore Font Catchen In Berlin - Event @ Berlin, Deutschland |
| 8 | 11.05.1953 | |
Billy Virag defeats Karel Istaz Catchen In Berlin - Event @ Berlin, Deutschland |
| 9 | 10.05.1953 | |
Karel Istaz defeats King Kong Taverne Catchen In Berlin - Event @ Berlin, Deutschland |
| 10 | 05.05.1953 | |
Karel Istaz defeats Erich Gottschalk Catchen In München - Event @ München, Bayern, Deutschland |
| 11 | 19.01.1953 | |
Dave Armstrong vs. Karel Istaz - Draw Wrestling In Leeds - Event @ Leeds, West Yorkshire, England, UK |
| 12 | 07.10.1951 | |
Bob Martin defeats Karel Istaz (14:15) Wrestling In Mailand - Event @ Palazzo del Ghiaccio in Mailand, Lombardei, Italien |
| 13 | 05.10.1951 | |
Georg Blemenschütz defeats Karel Istaz Wrestling In Mailand - Event @ Palazzo del Ghiaccio in Mailand, Lombardei, Italien |
| 14 | 04.10.1951 | |
Karel Istaz defeats Charles Ulsemer (9:24) Wrestling In Mailand - Event @ Palazzo del Ghiaccio in Mailand, Lombardei, Italien |
| 15 | 03.10.1951 | |
Hewett vs. Karel Istaz - Draw Wrestling In Mailand - Event @ Palazzo del Ghiaccio in Mailand, Lombardei, Italien |
| 16 | 02.10.1951 | |
Josef Stoffan defeats Karel Istaz (13:25) Wrestling In Mailand - Event @ Palazzo del Ghiaccio in Mailand, Lombardei, Italien |
| 17 | 01.10.1951 | |
Antonio Fusero vs. Karel Istaz - Draw Wrestling In Mailand - Event @ Palazzo del Ghiaccio in Mailand, Lombardei, Italien |
| 18 | 29.09.1951 | |
Primo Carnera defeats Karel Istaz Wrestling In Mailand - Event @ Palazzo del Ghiaccio in Mailand, Lombardei, Italien |
