| ITF M15 Vaasa | 06/03 10:50 | 27 | Daniil Glinka v Luca Castelnuovo | 6-1,6-4 | |
| ITF M15 Vaasa | 06/02 08:15 | 26 | Iiro Vasa v Luca Castelnuovo | 3-6,2-6 | |
| ITF M15 Vaasa | 06/01 14:55 | 25 | Oskar Antinheimo v Luca Castelnuovo | 1-6,2-6 | |
| ITF M15 Heraklion | 05/12 07:00 | 26 | Luca Castelnuovo v Mark Lajal | 4-6,2-6 | |
| ITF M15 Heraklion | 05/11 11:00 | 25 | Luca Castelnuovo v Attila Boros | 4-6,7-6,6-1 | |
| ITF M15 Monastir | 05/05 09:45 | 26 | Luca Castelnuovo v Boris Butulija | 4-6,5-7 | |
| ITF M15 Monastir | 05/04 10:30 | 25 | Luca Castelnuovo v Leonardo Rossi | 3-6,7-6,6-1 | |
| Challenger Mexico City | 04/03 21:10 | 14 | [415] Adrian Andreev v Luca Castelnuovo [318] | 6-4,6-2 | |
| Challenger Zadar | 03/20 09:00 | 14 | [321] Miljan Zekic v Luca Castelnuovo [307] | 6-0,6-4 | |
| ITF M25 Trimbach | 03/15 12:50 | 25 | [450] Harold Mayot v Luca Castelnuovo [307] | 6-4,6-4 | |
| ITF M15 Oberhaching | 02/16 10:50 | 25 | [325] Luca Castelnuovo v Leandro Riedi [318] | 3-6,2-6 | |
| ITF M15 Grenoble | 02/09 11:50 | 25 | [328] Luca Castelnuovo v Clement Tabur [455] | 6-7,1-6 | |
| Challenger Rio De Janeiro | 12/14 13:00 | 25 | [349] Johan Nikles v Luca Castelnuovo [313] | 6-2,6-4 | |
| Challenger Rio De Janeiro | 12/13 14:15 | 19 | Roy Smith v Luca Castelnuovo | 6-7,6-3,2-6 | |
| Challenger Rio De Janeiro | 12/12 14:00 | 14 | [110] Fernando Romboli v Luca Castelnuovo [324] | 4-6,6-7 | |
| Challenger Florianopolis | 12/05 12:30 | 14 | [320] Luca Castelnuovo v Federico Zeballos [246] | 3-6,1-6 | |
| Challenger Sao Paulo | 11/28 15:15 | 14 | [333] Luca Castelnuovo v Igor Marcondes [383] | Retired | |
| Challenger Brasilia | 11/22 13:00 | 19 | Luca Castelnuovo v Tomas Lipovsek Puches | 7-5,6-7,5-7 | |
| Challenger Brasilia | 11/21 14:35 | 14 | [453] Gonzalo Villanueva v Luca Castelnuovo [332] | 6-7,6-3,3-6 | |
| ITF M15 Cundinamarca | 11/16 19:25 | 25 | Mateo Gomez v Luca Castelnuovo | 1-6,6-2,7-5 | |
| Challenger Lima | 10/24 16:00 | 26 | [341] Luca Castelnuovo v Alexandar Lazarov [462] | 4-6,5-7 | |
| Challenger Bogota | 10/19 16:40 | 25 | [234] Facundo Mena v Luca Castelnuovo [341] | 6-4,6-2 | |
| Challenger Bogota | 10/18 17:35 | 19 | [120] Evan King v Luca Castelnuovo [341] | 6-7,7-5,6-7 | |
| Challenger Bogota | 10/17 18:10 | 14 | Luca Castelnuovo v Juan A Hernandez | 6-4,6-2 | |
| ITF M25 Lima | 10/12 15:00 | 25 | [478] Gonzalo Villanueva v Luca Castelnuovo [341] | 4-6,6-4,6-4 | |
| ITF M25 Lima | 10/05 15:00 | 25 | [341] Luca Castelnuovo v Boris Arias [299] | 4-6,6-4,3-6 | |
| Challenger Lima | 09/26 20:50 | 14 | [359] Carlos Gomez-Herrera v Luca Castelnuovo [334] | 7-5,6-0 | |
| Challenger Ambato | 09/20 15:00 | 19 | [334] Luca Castelnuovo v Matias Zukas [479] | 3-6,6-7 | |
| Challenger Ambato | 09/19 15:00 | 14 | [448] Gonzalo Villanueva v Luca Castelnuovo [328] | 6-7,6-7 | |
| Challenger Quito | 09/14 19:35 | 25 | [435] Alejandro Gonzalez v Luca Castelnuovo [328] | 6-2,7-6 |