| WTT Star Contender Ljubljana Quals | 06/11 16:35 | 6 | Filip Zeljko v Zhe Yu Clarence Chew | L | 0-3 | |
| WTT Contender Zagreb | 06/06 12:10 | 5 | Filip Zeljko v Simon Gauzy | L | 2-3 | |
| WTT Feeder Cappadocia | 05/16 15:50 | 3 | Jaehyun An v Filip Zeljko | L | 3-0 | |
| WTT Feeder Cappadocia | 05/16 10:35 | 4 | Filip Zeljko v Joao Geraldo | W | 3-2 | |
| WTT Feeder Cappadocia | 05/15 15:50 | 5 | Filip Zeljko v Rares Sipos | W | 3-0 | |
| WTT Saudi Smash Quals | 05/01 08:05 | 14 | Filip Zeljko v Matteo Mutti | L | 1-3 | |
| WTT Feeder Havirov | 04/15 16:20 | 5 | Hiroto Shinozuka v Filip Zeljko | L | 3-0 | |
| WTT Feeder Havirov | 04/15 11:25 | 6 | Filip Zeljko v Tzu-Yi Yang | W | 3-2 | |
| WTT Feeder Dusseldorf | 04/10 17:00 | 5 | Filip Zeljko v Mizuki Oikawa | L | 0-3 | |
| WTT Feeder Dusseldorf | 04/10 12:05 | 6 | Panagiotis Gionis v Filip Zeljko | W | 2-3 | |
| WTT Feeder Varazdin | 04/05 10:05 | 5 | Filip Zeljko v Eduard Ionescu | L | 1-3 | |
| WTT Feeder Varazdin | 04/04 16:00 | 6 | Junsung Oh v Filip Zeljko | W | 2-3 |