Stadium: Court 1 Round: 25 Ground: Clay
| ITF Italy F12 | 2015/06/05 14:30 | Tatlot, Johan Sebastien v Alessandro Giannessi | 3-6,5-7 |
| US Open, New York, USA | 2019/08/22 16:25 | Constant Lestienne v Alessandro Giannessi | 6-3,6-0 |
| US Open, New York, USA | 2019/08/20 15:00 | Wolf, Jeffrey John v Alessandro Giannessi | 6-2,5-7,2-6 |
| Sopot, Pologne | 2019/07/30 13:25 | Alessandro Giannessi v Aleksandre Metreveli | 6-4,3-6,4-6 |
| Challenger - Prague | 2019/07/24 10:35 | Alessandro Giannessi v Andrea Collarini | 0-6,2-6 |
| Challenger San Benedetto | 2019/07/21 19:15 | Alessandro Giannessi v Renzo Olivo | 7-5,6-7,4-6 |
| Challenger San Benedetto | 2019/07/20 17:55 | Andrej Martin v Alessandro Giannessi | 7-6,1-6,6-7 |
| Challenger San Benedetto | 2019/07/19 17:45 | Alessandro Giannessi v Arnaboldi, Andrea | 5-7,6-3,7-6 |
| Challenger San Benedetto | 2019/07/18 17:30 | Alessandro Giannessi v Manuel Guinard | 6-3,4-6,6-3 |
| Challenger Como | 2019/08/26 15:05 | Marc-Andrea Huesler v Tatlot, Johan Sebastien | 6-2,5-7,3-6 |
| Challenger Meerbusch | 2019/08/13 11:50 | Tatlot, Johan Sebastien v Karim-Mohamed Maamoun | 4-6,3-6 |
| Challenger Amersfoort | 2019/07/17 13:35 | Igor Sijsling v Tatlot, Johan Sebastien | 6-3,7-5 |
| Challenger Blois | 2019/06/21 16:15 | Arguello, Facundo v Tatlot, Johan Sebastien | 6-4,6-0 |
| Challenger Blois | 2019/06/20 11:35 | Tatlot, Johan Sebastien v Pedro Martinez | 1-6,7-6,7-5 |
| Challenger Blois | 2019/06/18 12:55 | Tatlot, Johan Sebastien v Hamou, Maxime | 6-3,6-4 |
| Challenger - Lyon | 2019/06/12 16:00 | Tatlot, Johan Sebastien v Sousa, Pedro | 1-6,7-6,3-6 |
| Challenger - Lyon | 2019/06/10 12:20 | Zdenek Kolar v Tatlot, Johan Sebastien | 5-7,4-6 |