| Challenger - Banja Luka | 08/22 15:00 | 25 | Jan Choinski v Lorenzo Giustino | 6-2,7-6 | |
| Challenger - San Marino | 08/11 19:55 | 26 | [253] Lorenzo Giustino v Alexander Weis [423] | 2-6,5-7 | |
| Challenger - San Marino | 08/08 15:00 | 25 | [175] Nino Serdarusic v Lorenzo Giustino [253] | 6-7,6-4,3-6 | |
| Challenger - Liberec | 08/02 11:35 | 25 | Lorenzo Giustino v Sumit Nagal | 3-6,6-2,6-7 | |
| Challenger - Zug | 07/29 11:00 | 27 | [189] Dimitar Kuzmanov v Lorenzo Giustino [260] | 6-4,6-4 | |
| Challenger - Zug | 07/27 09:00 | 26 | [260] Lorenzo Giustino v Jan-Lennard Struff [121] | 6-4,7-6 | |
| Challenger - Zug | 07/26 11:55 | 25 | [260] Lorenzo Giustino v Maximilian Neuchrist [377] | 6-2,4-6,7-5 | |
| Challenger - Zug | 07/25 10:00 | 19 | [260] Lorenzo Giustino v Edoardo Lavagno [395] | 6-2,6-4 | |
| Challenger - Zug | 07/24 10:20 | 14 | Lorenzo Giustino v Mirko Martinez | 6-3,6-3 | |
| Challenger - Tampere | 07/21 13:50 | 26 | [110] Juan Manuel Cerundolo v Lorenzo Giustino [261] | 7-6,6-1 | |
| Challenger - Tampere | 07/19 16:05 | 25 | [270] Patrik Niklas-Salminen v Lorenzo Giustino [261] | 2-6,3-6 | |
| Challenger - Verona | 07/10 11:50 | 14 | Lorenzo Giustino v Remy Bertola | 2-6,3-6 | |
| Challenger - Braunschweig | 07/03 09:00 | 14 | [275] Lorenzo Giustino v Oscar Jose Gutierrez [389] | 4-6,2-6 | |
| Challenger - Troyes | 06/29 10:10 | 26 | [291] Juan Bautista Torres v Lorenzo Giustino [275] | 6-4,6-3 | |
| Challenger - Troyes | 06/27 17:25 | 25 | [275] Lorenzo Giustino v Genaro A Olivieri [224] | 7-5,6-7,6-1 | |
| Wimbledon | 06/20 10:00 | 14 | [273] Lorenzo Giustino v Mikhail Kukushkin [160] | 2-6,1-6 | |
| Challenger - Blois | 06/13 13:25 | 25 | [263] Lorenzo Giustino v Vit Kopriva [139] | 6-2,4-6,6-7 | |
| Challenger - Posen | 05/31 08:00 | 25 | [68] Arthur Rinderknech v Lorenzo Giustino [207] | 6-4,6-0 | |
| Challenger - Vicenza | 05/23 17:30 | 25 | [222] Andrea Pellegrino v Lorenzo Giustino [207] | 6-4,6-4 | |
| French Open | 05/18 08:00 | 15 | [287] Pedro Sousa v Lorenzo Giustino [205] | 6-4,6-1 | |
| French Open | 05/16 11:40 | 14 | [205] Lorenzo Giustino v Dennis Novak [150] | 7-5,7-6 | |
| Challenger - Prag | 05/08 10:20 | 29 | [176] Pedro Cachin v Lorenzo Giustino [223] | 6-3,7-6 | |
| Challenger - Prag | 05/07 09:00 | 28 | [223] Lorenzo Giustino v Dimitar Kuzmanov [206] | 7-6,4-6,6-2 | |
| Challenger - Prag | 05/06 09:00 | 27 | [183] Federico Gaio v Lorenzo Giustino [223] | 3-6,6-3,6-7 | |
| Challenger - Prag | 05/04 10:35 | 26 | Lorenzo Giustino v Matteo Donati | 6-1,6-3 | |
| Challenger - Prag | 05/02 14:15 | 25 | [237] Marius Copil v Lorenzo Giustino [223] | 6-3,6-7,5-7 | |
| Challenger - Ostrava | 04/27 11:25 | 26 | [380] Mats Rosenkranz v Lorenzo Giustino [224] | 6-1,5-7,6-4 | |
| Challenger - Ostrava | 04/26 09:45 | 25 | [224] Lorenzo Giustino v Gregoire Barrere [228] | 6-4,5-7,6-4 | |
| Challenger - Prag | 04/22 12:20 | 27 | [246] Dalibor Svrcina v Lorenzo Giustino [222] | Retired | |
| Challenger - Prag | 04/21 12:15 | 26 | [222] Lorenzo Giustino v Emilio Nava [365] | 5-7,7-6,7-6 |
Lorenzo Giustino (* 10. September 1991 in Neapel) ist ein italienischer Tennisspieler.