Hungary: M15 Nyiregyhaza - Singles - Main
Quarter-finals Chayka A. Kellovsky D. 1:2 (2:6, 7:5, 0:6) details 14.06.2024
1/8-finals Ferrari F. Chayka A. 0:2 (3:6, 3:6) details 14.06.2024
1/16-finals Lehmann N. Chayka A. 0:2 (4:6, 66 :7) details 13.06.2024
Hungary: M15 Gyula - Singles - Main
1/16-finals Gola A. Chayka A. 2:1 (6:4, 5:7, 6:2) details 28.05.2024
Romania: M15 Bucharest 3 - Singles - Main
1/8-finals Chayka A. Boitan G. A. 0:2 (1:6, 3:6) details 23.05.2024
1/16-finals Chayka A. Sciahbasi L. 2:0 (6:4, 7:6) details 22.05.2024
Tunisia: M15 Monastir 8 - Singles - Main
1/16-finals Paul J. Chayka A. 2:1 (6:4, 2:6, 7:5) details 21.02.2024
Turkey: M15 Antalya 21 - Singles - Main
1/16-finals Pampanin P. Chayka A. 2:0 (6:4, 6:1) details 20.12.2023
Egypt: M15 Sharm ElSheikh 20 - Singles - Main
1/8-finals Chayka A. Philippov E. 0:2 (3:6, 4:6) details 14.12.2023
1/16-finals Chayka A. Fiorentini A. 2:1 (3:6, 6:4, 7:5) details 13.12.2023
Slovakia: M25 Trnava 2 - Singles - Main
1/8-finals Chayka A. Colson T. 0:2 (4:6, 4:6) details 09.11.2023
1/16-finals Ejupovic E. Chayka A. 1:2 (7:65 , 4:6, 64 :7) details 08.11.2023
Bulgaria: M25 Pazardzhik - Singles - Main
1/16-finals Chayka A. Chepelev A. 0:2 (3:6, 0:6) details 26.09.2023
Czech Republic: M25 Pardubice - Singles - Main
1/16-finals Chayka A. Barnat J. 0:2 (1:6, 4:6) details 20.09.2023
China: M25 Anning - Singles - Main
Quarter-finals Chayka A. Te R. 0:2 (1:6, 65 :7) details 04.08.2023
1/8-finals Li H. Chayka A. 0:2 (62 :7, 2:6) details 03.08.2023
1/16-finals Lee K. Chayka A. 1:2 (6:2, 5:7, 4:6) details 02.08.2023
Egypt: M15 Cairo 10 - Singles - Main
1/16-finals Ragazzi A. Chayka A. 2:0 (6:0, 6:0) details 17.08.2022