| 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 | |
| ITF Italy F35 | 10/25 17:25 | 26 | Walter Trusendi v Lorenzo Giustino | 7-6,0-6,6-7 | |
| ITF Italy F35 | 10/23 18:25 | 25 | Raul Brancaccio v Lorenzo Giustino | 6-7,2-6 | |
| ITF Italy F34 | 10/20 13:00 | 28 | [261] Lorenzo Giustino v Daniel Gimeno-Traver [497] | 3-6,6-3,3-6 | |
| ITF Italy F34 | 10/19 14:55 | 27 | [261] Lorenzo Giustino v Omar Giacalone [404] | 6-0,7-5 | |
| ITF Italy F34 | 10/18 13:00 | 26 | Lorenzo Giustino v Dragos N Madaras | 6-3,6-3 | |
| ITF Italy F34 | 10/17 13:00 | 25 | Lorenzo Giustino v Alexander Lebedyn | 6-3,6-1 | |
| ITF Italy F33 | 10/11 15:20 | 26 | [230] Andrea Vavassori v Lorenzo Giustino [261] | 6-1,6-2 | |
| ITF Italy F33 | 10/10 12:55 | 25 | [295] Walter Trusendi v Lorenzo Giustino [261] | 3-6,6-7 | |
| Challenger Rome 2 | 09/26 09:00 | 25 | Lorenzo Giustino v Patricio Heras | 1-6,3-6 | |
| Challenger Sibiu | 09/18 09:00 | 25 | [129] Stefano Travaglia v Lorenzo Giustino [198] | 6-2,6-0 | |
| Challenger Banja Luka | 09/13 08:00 | 25 | [313] Tomislav Brkic v Lorenzo Giustino [198] | 6-4,6-4 | |
| ITF Italy F28 | 09/05 14:30 | 25 | Lorenzo Giustino v Roberto Marcora | 3-6,4-6 | |
| US Open Qual | 08/23 20:35 | 44 | [254] Stephane Robert v Lorenzo Giustino [189] | 6-4,6-2 | |
| Challenger Cordenons | 08/19 17:00 | 28 | [279] Elias Ymer v Lorenzo Giustino [197] | 6-2,6-1 | |
| Challenger Cordenons | 08/18 18:15 | 27 | Lorenzo Giustino v Andrea Pellegrino | 6-3,6-3 | |
| Challenger Cordenons | 08/17 12:00 | 26 | [197] Lorenzo Giustino v Daniel M.-De La Nava [418] | 3-6,6-2,6-3 | |
| Challenger Cordenons | 08/15 14:35 | 25 | [197] Lorenzo Giustino v Gianluigi Quinzi [260] | 4-6,6-2,6-1 | |
| Challenger Portoroz | 08/08 08:00 | 25 | [199] Lorenzo Giustino v Matteo Berrettini [162] | 6-3,3-6,4-6 | |
| Challenger Biella | 08/01 08:00 | 25 | Constant Lestienne v Lorenzo Giustino | 7-5,4-6,6-4 | |
| ATP Gstaad | 07/24 14:30 | 25 | [192] Lorenzo Giustino v Denis Istomin [82] | 3-6,2-6 | |
| ATP Gstaad Qual | 07/23 11:15 | 46 | [137] Joao Souza v Lorenzo Giustino [182] | 6-7,6-7 | |
| ATP Gstaad Qual | 07/22 11:50 | 45 | [409] Yann Marti v Lorenzo Giustino [182] | 4-6,7-6,2-6 | |
| Challenger San Benedetto | 07/18 14:40 | 25 | [182] Lorenzo Giustino v Carlos Taberner [301] | 3-6,5-7 | |
| Challenger Perugia | 07/11 09:00 | 25 | [168] Lorenzo Giustino v Gleb Sakharov [205] | 6-7,2-6 | |
| Challenger Marburg | 07/03 11:30 | 25 | [299] Joao Pedro Sorgi v Lorenzo Giustino [168] | 6-7,6-3,7-6 | |
| Wimbledon Qual | 06/26 10:00 | 44 | [119] Darian King v Lorenzo Giustino [168] | 6-4,6-0 | |
| Challenger Lyon | 06/12 16:00 | 25 | [167] Lorenzo Giustino v Casper Ruud [112] | 4-6,0-6 | |
| Challenger Prostejov | 06/06 09:00 | 25 | [175] Lorenzo Giustino v Joao Souza [140] | 5-7,7-6,3-6 |
Lorenzo Giustino (ur. 10 września 1991 w Neapolu) – włoski tenisista.