| ITF Italy F7 | 04/11 14:00 | 26 | [393] Lenny Hampel v Lorenzo Giustino [234] | 1-6,4-6 | |
| ITF Italy F7 | 04/10 14:45 | 25 | Billy Harris v Lorenzo Giustino | 1-6,0-6 | |
| Challenger Alicante | 04/04 11:35 | 26 | [246] Lorenzo Giustino v Marco Cecchinato [99] | 3-6,5-7 | |
| Challenger Alicante | 04/03 10:55 | 25 | [246] Lorenzo Giustino v Carlos Taberner [186] | Retired | |
| ITF Italy F5 | 04/01 12:00 | 29 | [243] Lorenzo Giustino v Martin Cuevas [308] | 7-5,7-5 | |
| ITF Italy F5 | 03/31 12:00 | 28 | [243] Lorenzo Giustino v Miljan Zekic [315] | 6-4,6-0 | |
| ITF Italy F5 | 03/30 14:35 | 27 | Lorenzo Giustino v Bogdan Ionut Apostol | 2-6,6-1,7-6 | |
| ITF Italy F5 | 03/29 16:35 | 26 | Lorenzo Giustino v Paul Woerner | 4-6,6-3,7-5 | |
| ITF Italy F5 | 03/28 12:00 | 25 | Lorenzo Giustino v Yan Sabanin | 6-3,7-5 | |
| Challenger Lille | 03/20 11:50 | 25 | [254] Laurynas Grigelis v Lorenzo Giustino [243] | 6-4,7-6 | |
| Challenger Lille | 03/20 11:30 | 25 | Mats Moraing v Lorenzo Giustino | 0-0 | |
| ITF Italy F3 | 03/16 13:00 | 27 | Andrea Basso v Lorenzo Giustino | 5-7,7-5,6-4 | |
| ITF Italy F3 | 03/15 13:00 | 26 | Billy Harris v Lorenzo Giustino | 2-6,3-6 | |
| ITF Italy F3 | 03/13 15:00 | 25 | Georg Winkler v Lorenzo Giustino | 3-6,2-6 | |
| ITF Italy F2 | 03/10 11:00 | 28 | Lorenzo Giustino v Attila Balazs | 6-7,6-4,4-6 | |
| ITF Italy F2 | 03/09 16:45 | 27 | Wilson Leite v Lorenzo Giustino | 2-6,0-6 | |
| ITF Italy F2 | 03/09 13:25 | 26 | Alexander Weis v Lorenzo Giustino | 2-6,4-6 | |
| ITF Italy F2 | 03/08 12:30 | 25 | Horst Rieder v Lorenzo Giustino | 3-6,0-6 | |
| ITF Spain F3 | 02/04 09:00 | 28 | Lorenzo Giustino v Daniel Gimeno-Traver | 6-7,5-7 | |
| ITF Spain F3 | 02/03 13:10 | 27 | Lorenzo Giustino v Pol Toledo Bague | 6-1,1-6,6-1 | |
| ITF Spain F3 | 01/31 11:45 | 26 | Lorenzo Giustino v Oleg Prihodko | Retired | |
| ITF Spain F3 | 01/30 10:35 | 25 | Lorenzo Giustino v Guy Den Heijer | 6-7,6-4,6-2 | |
| ITF Spain F2 | 01/28 10:50 | 29 | Daniel M. D L Nava v Lorenzo Giustino | 6-4,5-7,6-3 | |
| ITF Spain F2 | 01/27 10:00 | 28 | Ivan Gakhov v Lorenzo Giustino | 1-6,2-6 | |
| ITF Spain F2 | 01/26 13:30 | 27 | Daniel Gimeno-Traver v Lorenzo Giustino | 4-6,5-7 | |
| ITF Spain F2 | 01/25 09:00 | 26 | Francisco Cabral v Lorenzo Giustino | 1-6,3-6 | |
| ITF Spain F2 | 01/23 10:45 | 25 | Marc Fornell-Mestres v Lorenzo Giustino | 3-6,2-6 | |
| Australian Open Qual | 01/10 05:00 | 44 | Vasek Pospisil v Lorenzo Giustino | 7-5,7-6 | |
| ITF Greece F8 | 11/07 09:35 | 25 | Zsombor Piros v Lorenzo Giustino | 6-3,6-3 | |
| ITF Italy F35 | 10/26 13:00 | 27 | Andrea Vavassori v Lorenzo Giustino | 4-6,6-2,6-2 |
Lorenzo Giustino (ur. 10 września 1991 w Neapolu) – włoski tenisista.