Stadium: Court 7 Round: 25 Ground: Clay
| ITF M15 Alkmaar | 2019/06/25 09:00 | Remy Bertola v Gelhardt, Luca | 4-6,0-6 |
| ITF M15 Troisdorf | 2019/05/06 07:00 | Terczynski, Mateusz v Gelhardt, Luca | 2-6,6-2,13-11 |
| ITF - M15 Antalya | 2019/04/16 09:00 | Mikhail Korovin v Gelhardt, Luca | 6-2,7-5 |
| ITF - M15 Antalya | 2019/04/15 07:00 | Bingyu Yu v Gelhardt, Luca | 2-6,0-6 |
| ITF - M15 Antalya | 2019/04/10 10:10 | Louis Wessels v Gelhardt, Luca | 6-1,6-1 |
| ITF - M15 Antalya | 2019/04/09 09:30 | Saraiva, Bernardo v Gelhardt, Luca | 7-5,4-6,8-10 |
| ITF - M15 Antalya | 2019/04/08 07:15 | Gelhardt, Luca v Mert Naci Turker | 3-6,6-3,10-5 |
| ITF - M15 Antalya | 2019/04/01 07:00 | Ovcharov, Alexander v Gelhardt, Luca | 3-6,6-1,10-6 |
| ITF - M15 Kalmar | 2019/05/16 10:25 | Stevens, Bart v Adil Kalyanpur | 6-3,6-2 |
| ITF - M15 Kalmar | 2019/05/14 11:55 | Markovic, Goran v Stevens, Bart | 2-6,1-6 |
| Karlskrona, Singles Qualifying M-ITF-SWE-01A | 2019/05/07 13:30 | Stevens, Bart v Hallquist Lithen, John | 6-7,6-2,3-6 |
| ITF - M15 Kashiwa | 2019/04/01 00:00 | Ono, Masayoshi v Stevens, Bart | 3-6,2-6 |
| ITF - M15 Tsukuba | 2019/03/27 01:00 | Stevens, Bart v Tanaka, Yunosuke | 6-4,4-6,2-6 |
| ITF - M15 Tsukuba | 2019/03/25 04:45 | Stevens, Bart v Tomohiro Masabayashi | 6-7,6-3,10-3 |
| Kofu, Qualifications Simples M-ITF-JPN-03A | 2019/03/18 00:30 | Stevens, Bart v Tanaka, Yunosuke | 6-3,5-7,6-10 |
| Oslo, Singles M-ITF-NOR-01A | 2019/03/08 09:00 | Stevens, Bart v Danilov, Savriyan | 2-6,6-4,5-7 |