| Challenger - Sevilla | 09/06 17:00 | 25 | [238] Lorenzo Giustino v Flavio Cobolli [281] | 0-6,2-6 | |
| US Open | 08/25 19:40 | 14 | [237] Lorenzo Giustino v Aleksandar Kovacevic [410] | 6-3,6-7,1-6 | |
| Challenger - Verona | 08/17 13:20 | 25 | [268] Riccardo Bonadio v Lorenzo Giustino [237] | 4-6,6-4,6-4 | |
| Challenger - Prag | 08/11 10:00 | 26 | [236] Lorenzo Giustino v Evan Furness [294] | 6-7,6-4,3-6 | |
| Challenger - Prag | 08/10 08:00 | 25 | Lorenzo Giustino v Evgeny Karlovskiy | 7-6,6-2 | |
| Challenger - Cordenons | 08/04 13:00 | 26 | [119] Francisco Cerundolo v Lorenzo Giustino [234] | 6-3,6-3 | |
| Challenger - Cordenons | 08/02 13:50 | 25 | [234] Lorenzo Giustino v Filippo Baldi [314] | 6-7,6-4,6-2 | |
| Challenger - Triest | 07/28 17:00 | 26 | [235] Lorenzo Giustino v Timofey Skatov [308] | 6-1,2-6,1-6 | |
| Challenger - Triest | 07/26 15:00 | 25 | [215] Thomas Fabbiano v Lorenzo Giustino [235] | 3-6,4-6 | |
| Challenger - Todi | 07/13 11:00 | 25 | [472] Giovanni Fonio v Lorenzo Giustino [227] | 6-4,6-3 | |
| Challenger - Perugia | 07/06 11:10 | 25 | [325] Timofey Skatov v Lorenzo Giustino [228] | 1-6,7-6,6-0 | |
| Challenger - Porto | 06/29 11:25 | 25 | [228] Lorenzo Giustino v Frederico Ferreira Silva [176] | 4-6,6-4,3-6 | |
| Wimbledon | 06/22 11:35 | 14 | [215] Lorenzo Giustino v Illya Marchenko [155] | 5-7,6-7 | |
| Challenger - Almaty | 06/15 09:10 | 25 | [215] Lorenzo Giustino v Pavel Kotov [270] | 6-7,4-6 | |
| Challenger - Almaty | 06/07 05:35 | 25 | [178] Lorenzo Giustino v Timofey Skatov [399] | 4-6,6-3,2-6 | |
| Challenger - Biella | 06/03 11:30 | 26 | [237] Marco Trungelliti v Lorenzo Giustino [178] | 6-4,6-2 | |
| Challenger - Biella | 06/01 13:30 | 25 | Luca Nardi v Lorenzo Giustino | Retired | |
| French Open | 05/25 14:25 | 14 | [178] Lorenzo Giustino v Zhizhen Zhang [175] | 7-5,5-7,2-6 | |
| ATP - Genf | 05/16 13:10 | 19 | [104] Pablo Cuevas v Lorenzo Giustino [174] | 6-2,6-4 | |
| ATP - Genf | 05/15 11:00 | 14 | [174] Lorenzo Giustino v Peter Gojowczyk [132] | 6-2,6-3 | |
| Challenger - Biella | 05/04 08:00 | 25 | [242] Dimitar Kuzmanov v Lorenzo Giustino [175] | 6-3,1-6,6-3 | |
| Challenger - Biella | 05/04 08:00 | 25 | [208] Aleksandar Vukic v Lorenzo Giustino [175] | Cancelled | |
| Challenger - Rom | 04/29 14:40 | 26 | [210] Cem Ilkel v Lorenzo Giustino [174] | 6-4,6-2 | |
| Challenger - Rom | 04/27 12:25 | 25 | [174] Lorenzo Giustino v Juan P Varillas [150] | 6-1,7-5 | |
| Challenger - Rom | 04/23 13:05 | 27 | [179] Lorenzo Giustino v Vit Kopriva [287] | 6-1,5-7,3-6 | |
| Challenger - Rom | 04/22 09:00 | 26 | [179] Lorenzo Giustino v Sergiy Stakhovsky [211] | 6-4,6-4 | |
| Challenger - Rom | 04/21 09:00 | 25 | [179] Lorenzo Giustino v Filip Horansky [178] | 7-6,7-5 | |
| Challenger - Split | 04/13 15:20 | 25 | [204] Andrea Collarini v Lorenzo Giustino [168] | 6-4,6-4 | |
| ATP - Marbella | 04/05 10:00 | 19 | [135] Henri Laaksonen v Lorenzo Giustino [170] | 7-5,3-6,6-1 | |
| ATP - Marbella | 04/04 10:00 | 14 | [190] Roberto Marcora v Lorenzo Giustino [164] | 6-7,4-6 |
Lorenzo Giustino (* 10. September 1991 in Neapel) ist ein italienischer Tennisspieler.