| Challenger - Mouilleron-le-Captif | 11/09 18:20 | - | [130] Elias Ymer v Constant Lestienne [151] | 5-7,6-4,7-5 | |
| Challenger - Mouilleron-le-Captif | 11/07 11:25 | - | [151] Constant Lestienne v Joris De Loore [384] | 4-6,6-0,6-3 | |
| Challenger - Mouilleron-le-Captif | 11/05 18:50 | - | [158] Corentin Moutet v Constant Lestienne [151] | 3-6,4-6 | |
| ATP - Paris | 10/27 13:45 | - | [154] Constant Lestienne v Malek Jaziri [55] | 4-6,6-7 | |
| Challenger - Brest | 10/22 18:25 | - | [154] Constant Lestienne v Jaume Munar [79] | 1-6,3-6 | |
| ATP - Antuérpia | 10/16 10:00 | - | [58] Jan-Lennard Struff v Constant Lestienne [154] | 6-2,6-3 | |
| ATP - Antuérpia | 10/15 09:00 | - | [97] Ilya Ivashka v Constant Lestienne [154] | 4-6,7-6,6-3 | |
| ATP - Antuérpia | 10/14 10:15 | - | [165] Nicolas Mahut v Constant Lestienne [156] | 2-6,6-4,6-7 | |
| Challenger - Ortisei | 10/12 13:20 | - | [112] Ugo Humbert v Constant Lestienne [156] | 7-6,6-3 | |
| Challenger - Ortisei | 10/11 16:30 | - | Jannik Sinner v Constant Lestienne | 7-6,5-7,5-7 | |
| Challenger - Ortisei | 10/10 10:40 | - | [156] Constant Lestienne v Lorenzo Sonego [86] | 6-1,4-6,6-4 | |
| Challenger - Orleães | 09/27 17:40 | - | [158] Constant Lestienne v Aljaz Bedene [78] | 4-6,6-3,3-6 | |
| Challenger - Orleães | 09/25 10:40 | - | [158] Constant Lestienne v Tim Van Rijthoven [470] | 7-6,6-1 | |
| ATP - Metz | 09/19 17:30 | - | [167] Constant Lestienne v Richard Gasquet [25] | 4-6,2-6 | |
| ATP - Metz | 09/18 09:00 | - | [167] Constant Lestienne v Jurgen Zopp [122] | 6-3,7-5 | |
| ATP - Metz | 09/17 11:45 | - | [281] Maxime Janvier v Constant Lestienne [167] | 4-6,4-6 | |
| ATP - Metz | 09/16 13:55 | - | Boris Fassbender v Constant Lestienne | 2-6,1-6 | |
| Challenger - Istambul | 09/13 08:00 | - | [297] Matteo Viola v Constant Lestienne [172] | 6-3,6-1 | |
| Challenger - Istambul | 09/11 08:00 | - | [272] Daniel Masur v Constant Lestienne [172] | 6-0,3-6,6-7 | |
| Open dos EUA | 08/23 15:00 | - | [172] Constant Lestienne v Ruben Bemelmans [129] | 4-6,3-6 | |
| Open dos EUA | 08/21 19:05 | - | [229] Alessandro Giannessi v Constant Lestienne [172] | 3-6,2-6 | |
| Challenger - Portoroz | 08/11 18:00 | - | [224] Constant Lestienne v Andrea Arnaboldi [203] | 6-2,6-1 | |
| Challenger - Portoroz | 08/10 21:20 | - | [224] Constant Lestienne v Dominik Koepfer [263] | 6-3,6-2 | |
| Challenger - Portoroz | 08/09 18:00 | - | [118] Sergiy Stakhovsky v Constant Lestienne [224] | 6-3,2-6,1-6 | |
| Challenger - Portoroz | 08/08 14:00 | - | [224] Constant Lestienne v Nino Serdarusic [192] | 6-4,6-2 | |
| Challenger - Portoroz | 08/07 08:00 | - | [224] Constant Lestienne v Federico Gaio [235] | 6-3,6-2 | |
| Challenger - Liberec | 07/31 08:00 | - | [151] Pedro Sousa v Constant Lestienne [218] | 6-2,6-4 | |
| Challenger - Praga | 07/24 08:00 | - | [218] Constant Lestienne v Rogerio Dutra Silva [150] | 2-6,4-6 | |
| ATP - Bastad - Qualificação | 07/15 10:45 | - | Constant Lestienne v Christian Garin | Cancelled | |
| Challenger - Bastad | 07/12 09:00 | - | [125] Corentin Moutet v Constant Lestienne [225] | 7-5,6-3 |