23‑Oct‑2023 | M15 Telavi | Clay | R32 | 798 | 1088 | Giannicola Misasi [ITA] d. Kellovsky | 6-4 3-6 6-4 | | | | | | | | | |
16‑Oct‑2023 | M25 Telavi | Clay | R32 | 793 | 861 | Aleksandre Metreveli [GEO] d. Kellovsky | 7-6(5) 4-6 6-4 | | | | | | | | | |
2‑Oct‑2023 | M15 Bad Waltersdorf | Clay | R32 | 788 | 1277 | (Q)David Fix [GER] d. Kellovsky | 6-4 2-6 6-3 | | | | | | | | | |
25‑Sep‑2023 | M15 Arad | Clay | R32 | 791 | 914 | (Q)Bogdan Pavel [ROU] d. (8)Kellovsky | 6-4 6-4 | | | | | | | | | |
4‑Sep‑2023 | M15 Koszalin | Clay | F | 921 | 906 | (6)Lewie Lane [GER] d. (7)Kellovsky | 6-3 6-3 | | | | | | | | | |
4‑Sep‑2023 | M15 Koszalin | Clay | SF | 921 | 780 | (7)Kellovsky d. (5)Marcel Zielinski [POL] | 6-3 6-3 | | | | | | | | | |
4‑Sep‑2023 | M15 Koszalin | Clay | QF | 921 | 677 | (7)Kellovsky d. (2)Tom Gentzsch [GER] | 6-2 5-7 6-4 | | | | | | | | | |
4‑Sep‑2023 | M15 Koszalin | Clay | R16 | 921 | 1679 | (7)Kellovsky d. Tim Ruehl [GER] | 6-1 3-6 6-3 | | | | | | | | | |
4‑Sep‑2023 | M15 Koszalin | Clay | R32 | 921 | | (7)Kellovsky d. (Q)Piotr Siekanowicz [POL] | 6-4 7-5 | | | | | | | | | |
28‑Aug‑2023 | M15 Vienna | Clay | SF | 921 | 1094 | Milos Karol [SVK] d. (8)Kellovsky | 6-2 6-3 | | | | | | | | | |
28‑Aug‑2023 | M15 Vienna | Clay | QF | 921 | 545 | (8)Kellovsky d. (3)Luka Mikrut [CRO] | 6-4 6-0 | | | | | | | | | |
28‑Aug‑2023 | M15 Vienna | Clay | R16 | 921 | | (8)Kellovsky d. (Q)Janos Fekete [SVK] | 7-5 1-6 6-3 | | | | | | | | | |
28‑Aug‑2023 | M15 Vienna | Clay | R32 | 921 | 1577 | (8)Kellovsky d. (Q)Yvo Panak [CZE] | 5-7 6-3 7-6(1) | | | | | | | | | |
21‑Aug‑2023 | M25 Poznan | Clay | R32 | 927 | 550 | (8)Jeremy Jahn [GER] d. Kellovsky | 7-5 6-4 | | | | | | | | | |
14‑Aug‑2023 | M15 Kottingbrunn | Clay | R32 | 924 | 1625 | (JR)Yannik Kelm [GER] d. Kellovsky | 7-6(2) 6-3 | | | | | | | | | |
31‑Jul‑2023 | Liberec CH | Clay | Q1 | 933 | 386 | (1)Michael Vrbensky [CZE] d. (WC)Kellovsky | 6-1 6-2 | | 0.50 | 2.3% | 14.0% | 46.5% | 50.0% | 39.1% | 3/7 | 1:01 |
24‑Jul‑2023 | M15 Metzinger | Clay | R16 | 938 | 867 | Nicola Kuhn [GER] d. Kellovsky | 6-3 6-2 | | | | | | | | | |
24‑Jul‑2023 | M15 Metzinger | Clay | R32 | 938 | 737 | Kellovsky d. (7)Florian Broska [GER] | 3-6 6-4 6-3 | | | | | | | | | |
26‑Jun‑2023 | M15 Celje | Clay | R32 | 1111 | 545 | (3)Enrico Dalla Valle [ITA] d. (SE)Kellovsky | 6-4 6-1 | | | | | | | | | |
19‑Jun‑2023 | M15 Store | Clay | F | 1103 | 727 | Alvaro Guillen Meza [ECU] d. (Q)Kellovsky | 6-4 6-0 | | | | | | | | | |
19‑Jun‑2023 | M15 Store | Clay | SF | 1103 | 1386 | (Q)Kellovsky d. (Q)Alexander Klintcharov [NZL] | 6-2 7-6(5) | | | | | | | | | |
19‑Jun‑2023 | M15 Store | Clay | QF | 1103 | 679 | (Q)Kellovsky d. (7)Luca Wiedenmann [GER] | 3-6 7-5 7-5 | | | | | | | | | |
19‑Jun‑2023 | M15 Store | Clay | R16 | 1103 | 987 | (Q)Kellovsky d. (WC)Sebastian Dominko [SLO] | 3-6 6-3 6-3 | | | | | | | | | |
19‑Jun‑2023 | M15 Store | Clay | R32 | 1103 | | (Q)Kellovsky d. (Q)Dennis Dragomirov [GER] | 6-1 6-2 | | | | | | | | | |
12‑Jun‑2023 | M15 Litija | Clay | R32 | 1104 | 753 | Tadeas Paroulek [CZE] d. (Q)Kellovsky | 7-6(4) 6-4 | | | | | | | | | |
29‑May‑2023 | M25 Jablonec nad Nisou | Clay | R16 | 1160 | 302 | (1)Murkel Alejandro Dellien Velasco [BOL] d. (WC)Kellovsky | 4-6 6-3 6-4 | | | | | | | | | |
29‑May‑2023 | M25 Jablonec nad Nisou | Clay | R32 | 1160 | 579 | (WC)Kellovsky d. Tibo Colson [BEL] | 7-5 3-6 7-6(2) | | | | | | | | | |
15‑May‑2023 | M15 Krsko | Clay | R16 | 1209 | 691 | (7)Bor Artnak [SLO] d. (Q)Kellovsky | W/O | | | | | | | | | |
15‑May‑2023 | M15 Krsko | Clay | R32 | 1209 | 1166 | (Q)Kellovsky d. (Q)Pietro Pampanin [ITA] | 4-6 6-2 7-6(5) | | | | | | | | | |
24‑Apr‑2023 | Ostrava CH | Clay | Q1 | 1204 | 324 | (7)Illya Marchenko [UKR] d. (WC)Kellovsky | 6-4 6-1 | | 0.75 | 0.0% | 11.9% | 74.6% | 47.7% | 20.0% | 5/11 | 1:31 |
3‑Apr‑2023 | M15 Antalya | Clay | R16 | 1270 | 784 | Deney Wassermann [NED] d. (WC)Kellovsky | 7-6(1) 6-1 | | | | | | | | | |
3‑Apr‑2023 | M15 Antalya | Clay | R32 | 1270 | 1067 | (WC)Kellovsky d. Rei Sakamoto [JPN] | 7-5 6-0 | | | | | | | | | |
6‑Mar‑2023 | M15 Kish Island | Clay | R16 | 1619 | 988 | Maxence Broville [FRA] d. (Q)Kellovsky | 6-2 6-3 | | | | | | | | | |
6‑Mar‑2023 | M15 Kish Island | Clay | R32 | 1619 | | (Q)Kellovsky d. (WC)Samyar Elyasi [IRI] | 6-3 3-6 6-3 | | | | | | | | | |
27‑Feb‑2023 | M15 Antalya | Clay | QF | 1624 | 352 | (5)Alexander Weis [ITA] d. (Q)Kellovsky | 6-4 6-1 | | | | | | | | | |
27‑Feb‑2023 | M15 Antalya | Clay | R16 | 1624 | 1505 | (Q)Kellovsky d. (Q)Samuele Pieri [ITA] | 6-4 6-1 | | | | | | | | | |
27‑Feb‑2023 | M15 Antalya | Clay | R32 | 1624 | 1373 | (Q)Kellovsky d. (Q)Hiroyasu Ehara [JPN] | 6-3 6-2 | | | | | | | | | |
9‑Jan‑2023 | M15 Manacor | Hard | R32 | 1636 | 649 | Miguel Damas [ESP] d. (Q)Kellovsky | 6-4 6-4 | | | | | | | | | |