Stadium: Indoor Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF Nigeria F5 | 2017/10/20 10:20 | Prajnesh Gunneswaran v Johan Sebastien Tatlot | 3-6,6-7 |
| Challenger Barcelona | 2018/10/11 11:40 | Roberto Carballes Baena v Johan Sebastien Tatlot | 6-2,6-4 |
| Challenger Barcelona | 2018/10/10 13:45 | Johan Sebastien Tatlot v Bekkhan Atlangeriev | 6-1,6-3 |
| Challenger Florence | 2018/10/03 13:40 | Lorenzo Sonego v Johan Sebastien Tatlot | 6-2,6-4 |
| Challenger Banja Luka | 2018/09/15 12:25 | Johan Sebastien Tatlot v Carlos Berlocq | 2-6,4-6 |
| Challenger Banja Luka | 2018/09/14 13:30 | Johan Sebastien Tatlot v Daniel Gimeno-Traver | 4-6,7-5,7-5 |
| Challenger Banja Luka | 2018/09/12 08:30 | Johan Sebastien Tatlot v Alexander Lazov | 6-3,6-4 |
| Challenger Banja Luka | 2018/09/10 12:20 | Pedro Martinez v Johan Sebastien Tatlot | 3-6,4-6 |
| Challenger Seville | 2018/09/03 08:30 | Johan Sebastien Tatlot v Marko Djokovic | 3-6,3-6 |
| Challenger Ningbo | 2018/10/21 05:30 | Prajnesh Gunneswaran v Thomas Fabbiano | 6-7,6-4,3-6 |
| Challenger Ningbo | 2018/10/20 05:00 | Miomir Kecmanovic v Prajnesh Gunneswaran | 2-6,2-6 |
| Challenger Ningbo | 2018/10/19 03:00 | Yunseong Chung v Prajnesh Gunneswaran | 2-6,1-6 |
| Challenger Ningbo | 2018/10/17 03:00 | Zhe Li v Prajnesh Gunneswaran | 3-6,6-2,6-7 |
| Challenger Ningbo | 2018/10/15 04:00 | Mohamed Safwat v Prajnesh Gunneswaran | 6-7,2-6 |
| ATP Tokyo | 2018/09/29 06:20 | Martin Klizan v Prajnesh Gunneswaran | 6-4,6-2 |
| ATP Chengdu | 2018/09/26 05:00 | Prajnesh Gunneswaran v Matteo Berrettini | 3-6,4-6 |
| ATP Chengdu | 2018/09/23 07:30 | Hiroki Moriya v Prajnesh Gunneswaran | 4-6,3-6 |