Head to Head
| WTT Contender Zagreb | 2025/06/26 10:55 | Kay Stumper v Filip Zeljko | L | 3-0 |
| WTT Feeder Dusseldorf | 2022/11/23 17:25 | Kay Stumper v Filip Zeljko | L | 4-0 |
Home History
| Germany Bundesliga | 2025/09/06 13:30 | Filip Zeljko v Zhendong Fan | L | 1-3 |
| Europe Smash Quals | 2025/08/14 17:10 | Amirreza Abbasi v Filip Zeljko | L | 3-2 |
| WTT Contender Zagreb | 2025/06/26 10:55 | Kay Stumper v Filip Zeljko | L | 3-0 |
| WTT Star Contender Ljubljana Quals | 2025/06/18 17:00 | Filip Zeljko v Samuel Kulczycki | L | 1-3 |
| WTT Star Contender Ljubljana Quals | 2025/06/17 18:40 | Yingbin Xu v Filip Zeljko | W | 2-3 |
| WTT Star Contender Ljubljana Quals | 2025/06/17 08:00 | Hon Ming Li v Filip Zeljko | W | 0-3 |
| WTT Contender Skopje | 2025/06/11 09:35 | Filip Zeljko v Maciej Kolodziejczyk | W | 3-2 |
| WTT Feeder Pristina | 2025/06/05 11:55 | Niagol Stoyanov v Filip Zeljko | L | 3-1 |
Away History
| WTT Contender Almaty | 2025/09/04 08:15 | Lev Katsman v Kay Stumper | L | 3-1 |
| Champions League | 2025/08/31 09:15 | Kay Stumper v Tom Closset | W | 3-1 |
| Champions League | 2025/08/31 08:00 | Kay Stumper v Romain Brard | W | 3-0 |
| Champions League | 2025/08/29 09:05 | Kay Stumper v Piotr Michalski | W | 3-2 |
| Germany Bundesliga | 2025/08/27 17:57 | Kay Stumper v Hiroto Shinozuka | L | 1-3 |
| Europe Smash Quals | 2025/08/14 17:05 | Elias Sjogren v Kay Stumper | L | 3-2 |
| WTT Star Contender Foz do Iguacu | 2025/08/01 20:00 | Harmeet Desai v Kay Stumper | L | 3-2 |
| WTT Contender Buenos Aires | 2025/07/25 13:40 | Manav Vikash Thakkar v Kay Stumper | L | 3-2 |
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