18‑Sep‑2023 | M25 Pardubice | Clay | R32 | 934 | 1410 | (WC)Maxim Mrva [CZE] d. Siniakov | 4-6 6-2 7-5 | | | | | | | | | |
28‑Aug‑2023 | M25 Jablonec nad Nisou | Clay | QF | 970 | 506 | (8)Hynek Barton [CZE] d. Siniakov | 7-6(0) 7-6(1) | | | | | | | | | |
28‑Aug‑2023 | M25 Jablonec nad Nisou | Clay | R16 | 970 | 1485 | Siniakov d. (WC)Adam Jurajda [CZE] | 7-6(3) 7-5 | | | | | | | | | |
28‑Aug‑2023 | M25 Jablonec nad Nisou | Clay | R32 | 970 | 345 | Siniakov d. (4)Andrew Paulson [CZE] | 5-7 7-6(6) 6-4 | | | | | | | | | |
21‑Aug‑2023 | Prague CH | Clay | Q1 | 994 | 514 | (9)Jaime Faria [POR] d. (WC)Siniakov | 6-1 6-4 | | 0.78 | 0.0% | 12.5% | 56.3% | 59.3% | 42.9% | 2/6 | 1:19 |
14‑Aug‑2023 | M25 Bielsko Biala | Clay | R16 | 1001 | 703 | Olaf Pieczkowski [POL] d. Siniakov | 7-5 6-2 | | | | | | | | | |
14‑Aug‑2023 | M25 Bielsko Biala | Clay | R32 | 1001 | 505 | Siniakov d. (6)Yshai Oliel [ISR] | 6-3 2-6 7-5 | | | | | | | | | |
31‑Jul‑2023 | Liberec CH | Clay | Q1 | 1003 | 426 | (2)Alex Marti Pujolras [ESP] d. (WC)Siniakov | 1-6 6-3 6-1 | | 0.85 | 2.3% | 8.1% | 59.3% | 58.8% | 37.1% | 8/14 | 2:10 |
17‑Jul‑2023 | M25 Telfs | Clay | QF | 1089 | 567 | (7)Peter Heller [GER] d. Siniakov | 6-1 6-0 | | | | | | | | | |
17‑Jul‑2023 | M25 Telfs | Clay | R16 | 1089 | 470 | Siniakov d. (4)Juan Bautista Otegui [ARG] | 2-6 6-3 6-3 | | | | | | | | | |
17‑Jul‑2023 | M25 Telfs | Clay | R32 | 1089 | 1358 | Siniakov d. (Q)Timofey Stepanov [SUI] | 4-6 6-3 6-0 | | | | | | | | | |
10‑Jul‑2023 | M25+H Kassel | Clay | R32 | 1085 | 1226 | (Q)Facundo Yunis [SUI] d. (Q)Siniakov | 6-4 6-1 | | | | | | | | | |
3‑Jul‑2023 | M25 Marburg | Clay | R32 | 1085 | 1163 | (WC)Max Wiskandt [GER] d. Siniakov | 6-2 6-4 | | | | | | | | | |
5‑Jun‑2023 | Prostejov CH | Clay | Q1 | 1056 | 251 | (5)Roman Andres Burruchaga [ARG] d. (WC)Siniakov | 7-5 7-5 | | 0.85 | 1.1% | 1.1% | 74.7% | 57.7% | 41.7% | 8/13 | 2:02 |
29‑May‑2023 | M25 Jablonec nad Nisou | Clay | R32 | 1056 | 441 | (8)Stuart Parker [GBR] d. (WC)Siniakov | 6-0 6-2 | | | | | | | | | |
22‑May‑2023 | M25 Most | Clay | R32 | 1047 | 722 | Patrik Rikl [CZE] d. (Q)Siniakov | 6-3 4-6 6-3 | | | | | | | | | |