| Paul Davison defeated Jaroslaw Kowalski |
2010 PIOS - Event 7 Snooker |
| Stephen Craigie defeated Jaroslaw Kowalski |
2010 PIOS - Event 6 Snooker |
| Jaroslaw Kowalski defeated Shaun Parkes |
2010 PIOS - Event 6 Snooker |
| Mitchell Mann defeated Jaroslaw Kowalski |
2009 PIOS - Event 5 Snooker |
| Colin Norton defeated Jaroslaw Kowalski |
2009 PIOS - Event 4 Snooker |
| Lee Farebrother defeated Jaroslaw Kowalski |
2009 PIOS - Event 3 Snooker |
| Kevin van Hove defeated Jaroslaw Kowalski |
2009 PIOS - Event 2 Snooker |
| Neville Whalley defeated Jaroslaw Kowalski |
2009 PIOS - Event 1 Snooker |
| Steve Davis defeated Jaroslaw Kowalski |
2011 PTC - Event 6 Snooker |
| Jaroslaw Kowalski defeated Mateusz Baranowski |
2011 PTC - Event 6 Snooker |
| Greg Casey defeated Jaroslaw Kowalski |
2012 European Championships - Men Snooker |
| Jaroslaw Kowalski defeated Peteris Ermansons |
2012 European Championships - Men Snooker |
| Andres Petrov defeated Jaroslaw Kowalski |
2012 European Championships - Men Snooker |
| Antti Tolvanen defeated Jaroslaw Kowalski |
2012 European Championships - Men Snooker |