2‑Dec‑2019 | M15 Monastir | Hard | R16 | 1895 | 912 | (Q)Petr Michnev [CZE] d. Onclin | 6-1 6-2 | | | | | | | | | |
2‑Dec‑2019 | M15 Monastir | Hard | R32 | 1895 | 461 | Onclin d. (5)Francesco Forti [ITA] | 3-6 6-1 6-3 | | | | | | | | | |
25‑Nov‑2019 | M15 Monastir | Hard | R16 | 1894 | 1236 | Mattia Frinzi [ITA] d. Onclin | 6-2 6-3 | | | | | | | | | |
25‑Nov‑2019 | M15 Monastir | Hard | R32 | 1894 | 952 | Onclin d. (Q)Matyas Fuele [HUN] | 6-2 7-5 | | | | | | | | | |
11‑Nov‑2019 | M15 Meshref | Hard | F | 1892 | 533 | Onclin d. (3)Kai Wehnelt [GER] | 6-3 6-4 | | | | | | | | | |
11‑Nov‑2019 | M15 Meshref | Hard | SF | 1892 | 1062 | Onclin d. Valentin Royer [FRA] | 3-6 6-2 6-2 | | | | | | | | | |
11‑Nov‑2019 | M15 Meshref | Hard | QF | 1892 | 630 | Onclin d. (5)Vitaliy Sachko [UKR] | 6-0 7-6(2) | | | | | | | | | |
11‑Nov‑2019 | M15 Meshref | Hard | R16 | 1892 | 906 | Onclin d. Hong Kit Jack Wong [HKG] | 6-0 6-3 | | | | | | | | | |
11‑Nov‑2019 | M15 Meshref | Hard | R32 | 1892 | 511 | Onclin d. Ricardo Rodriguez [VEN] | 6-2 2-0 RET | | | | | | | | | |
4‑Nov‑2019 | M15 Sharm El Sheikh | Hard | R32 | 1900 | 502 | (7)Vladyslav Manafov [UKR] d. Onclin | 6-3 7-6(5) | | | | | | | | | |
4‑Nov‑2019 | M15 Meshref | Hard | R32 | 1900 | 1065 | (JR )Valentin Royer [FRA] d. Onclin | 6-1 6-4 | | | | | | | | | |
7‑Oct‑2019 | M15 Sharm El Sheikh | Hard | R16 | 1856 | 1063 | Anis Ghorbel [TUN] d. Onclin | 4-6 7-6(4) 6-3 | | | | | | | | | |
7‑Oct‑2019 | M15 Sharm El Sheikh | Hard | R32 | 1856 | 1396 | Onclin d. Jirat Navasirisomboon [THA] | 5-7 7-5 6-4 | | | | | | | | | |
30‑Sep‑2019 | M15 Sharm El Sheikh | Hard | R32 | 1862 | 1061 | Anis Ghorbel [TUN] d. (8)Onclin | 6-3 1-6 6-3 | | | | | | | | | |
30‑Sep‑2019 | M25 Tay Ninh | Hard | R32 | 1862 | 417 | Rio Noguchi [JPN] d. (Q)Onclin | 6-1 6-0 | | | | | | | | | |
12‑Aug‑2019 | M15 Koksijde | Clay | F | 1850 | | Carl Soderlund [SWE] d. (JR )Onclin | 6-4 6-0 | | | | | | | | | |
12‑Aug‑2019 | M15 Koksijde | Clay | SF | 1850 | 931 | (JR )Onclin d. Romain Barbosa [POR] | 2-6 6-4 7-5 | | | | | | | | | |
12‑Aug‑2019 | M15 Koksijde | Clay | QF | 1850 | 1071 | (JR )Onclin d. Simon Beaupain [BEL] | 6-4 6-1 | | | | | | | | | |
12‑Aug‑2019 | M15 Koksijde | Clay | R16 | 1850 | 1139 | (JR )Onclin d. Daniel De Jonge [NED] | 6-7(5) 6-3 6-1 | | | | | | | | | |
12‑Aug‑2019 | M15 Koksijde | Clay | R32 | 1850 | 1530 | (JR )Onclin d. Adan Freire Da Silva [FRA] | 6-1 6-1 | | | | | | | | | |
5‑Aug‑2019 | M15 Eupen | Clay | R16 | 1862 | 398 | (2)Gonzalo Villanueva [ARG] d. (JR )Onclin | 5-7 6-2 7-6(5) | | | | | | | | | |
5‑Aug‑2019 | M15 Jakarta | Hard | R32 | 1862 | 551 | Vladyslav Orlov [UKR] d. (WC)Onclin | 6-0 6-0 | | | | | | | | | |
5‑Aug‑2019 | M15 Eupen | Clay | R32 | 1862 | 1792 | (JR )Onclin d. Shinnosuke Hiramatsu [JPN] | 7-5 6-1 | | | | | | | | | |
29‑Jul‑2019 | M15 Brussels | Clay | R16 | | 525 | (2)Gonzalo Villanueva [ARG] d. Onclin | 4-6 6-2 6-3 | | | | | | | | | |
29‑Jul‑2019 | M15 Brussels | Clay | R32 | | | Onclin d. (WC)Theo Vandeweghe [BEL] | 7-5 6-1 | | | | | | | | | |
10‑Jun‑2019 | M15 Singapore | Hard | R32 | | | Kazuki Nishiwaki [JPN] d. (WC)Onclin | 6-0 6-1 | | | | | | | | | |
3‑Jun‑2019 | M15 Singapore | Hard | R16 | | 582 | Manish Sureshkumar [IND] d. (Q)Onclin | 6-1 6-0 | | | | | | | | | |
3‑Jun‑2019 | M15 Singapore | Hard | R32 | | | (Q)Onclin d. Nikit Reddy [USA] | 6-0 2-2 RET | | | | | | | | | |
27‑May‑2019 | M15 Singapore | Hard | R32 | | | Rimpei Kawakami [JPN] d. (Q)Onclin | 6-1 6-4 | | | | | | | | | |
29‑Apr‑2019 | M15 Cairo | Clay | R16 | | | (3)Kai Wehnelt [GER] d. (JR )Onclin | 6-2 6-1 | | | | | | | | | |
29‑Apr‑2019 | M15 Cairo | Clay | R32 | | | (JR )Onclin d. Ivan Krivic [CRO] | 6-0 7-6(10) | | | | | | | | | |
22‑Apr‑2019 | M15 Cairo | Clay | R16 | | | Marko Tepavac [SRB] d. Onclin | 6-4 6-1 | | | | | | | | | |
22‑Apr‑2019 | M15 Cairo | Clay | R32 | | | Onclin d. (2)Vit Kopriva [CZE] | 6-1 6-3 | | | | | | | | | |
4‑Feb‑2019 | M15 Sharm El Sheikh | Hard | R16 | | 464 | (3)Chun Hsin Tseng [TPE] d. Onclin | 6-1 6-3 | | | | | | | | | |
4‑Feb‑2019 | M15 Sharm El Sheikh | Hard | R32 | | | Onclin d. Jose Fco Vidal Azorin [ESP] | 6-4 6-4 | | | | | | | | | |