| Lefteris Georgiou defeated Ralf Kuester |
2018 Dynamic Billard Veldhoven Open 9-Ball |
| Albair Matloub defeated Ralf Kuester |
2018 Dynamic Billard Veldhoven Open 9-Ball |
| Gianluca Ascheri defeated Ralf Kuester |
2018 Dynamic Billard Treviso Open 9-Ball |
| Konstantinos Koukiadakis defeated Ralf Kuester |
2018 Dynamic Billard Treviso Open 9-Ball |
| Marcel Stecher defeated Ralf Kuester |
2019 Dynamic Billard St. Johann im Pongau Open 9-Ball |
| Markus Reischl defeated Ralf Kuester |
2019 Dynamic Billard St. Johann im Pongau Open 9-Ball |
| Vladimir Matvienko defeated Ralf Kuester |
2019 Dynamic Billard Leende Open 9-Ball |
| Attila Bezdan defeated Ralf Kuester |
2019 Dynamic Billard Leende Open 9-Ball |
| Alexandre Eve defeated Ralf Kuester |
2018 Dynamic Billard Leende Open 9-Ball |
| Mohammed-Hassan Baabad defeated Ralf Kuester |
2018 Dynamic Billard Leende Open 9-Ball |
| Oliver Ortmann defeated Ralf Kuester |
2017 EuroTour Billard Portugal Open 9-Ball |
| Cihangir Baran defeated Ralf Kuester |
2017 EuroTour Billard Portugal Open 9-Ball |