| Challenger Genova | 09/02 14:45 | 46 | Thomaz Bellucci v Andrea Guerrieri | 6-1,4-6,6-3 | |
| Challenger Genova | 09/02 07:00 | 45 | Thomaz Bellucci v Adelchi Virgili | 6-2,6-4 | |
| Challenger Como | 08/26 13:55 | 46 | [228] Dustin Brown v Thomaz Bellucci [311] | 6-3,6-4 | |
| Challenger Como | 08/25 18:40 | 45 | [311] Thomaz Bellucci v Marc-Andrea Huesler [362] | 6-2,7-5 | |
| ATP Winston-Salem | 08/18 21:15 | 64 | [309] Thomaz Bellucci v Dominik Koepfer [245] | 2-6,6-1,2-6 | |
| Challenger Sopot | 07/30 15:00 | 25 | [267] Thomaz Bellucci v Gianluca Mager [328] | 4-6,2-6 | |
| Challenger Padova | 07/24 17:00 | 25 | [266] Thomaz Bellucci v Tomislav Brkic [246] | 6-2,5-7,1-6 | |
| Challenger San Benedetto | 07/16 19:00 | 25 | [265] Thomaz Bellucci v Daniel Elahi Galan [226] | 6-4,1-6,4-6 | |
| Challenger Braunschweig | 07/10 15:55 | 25 | [274] Thomaz Bellucci v Yannick Maden [134] | 3-6,4-6 | |
| Challenger Marburg | 07/04 13:25 | 26 | [274] Thomaz Bellucci v Hugo Dellien [120] | 6-3,3-6,6-7 | |
| Challenger Marburg | 07/03 12:45 | 25 | [274] Thomaz Bellucci v Lloyd Harris [221] | 6-7,6-4,6-4 | |
| Challenger Marburg Qual | 07/02 10:00 | 54 | [125] Corentin Moutet v Thomaz Bellucci [274] | 4-6,4-6 | |
| Challenger Marburg Qual | 07/01 11:30 | 46 | [373] Daniel Masur v Thomaz Bellucci [276] | 4-6,2-6 | |
| Challenger Marburg Qual | 06/30 11:30 | 45 | Bogdan Borza v Thomaz Bellucci | 2-6,0-6 | |
| Challenger Milan Qual | 06/25 09:20 | 54 | [274] Thomaz Bellucci v Alexei Popyrin [360] | 4-6,5-7 | |
| Challenger Milan Qual | 06/24 12:15 | 46 | Thomaz Bellucci v Enrico Dalla Valle | 7-5,6-2 | |
| Challenger Milan Qual | 06/23 09:20 | 45 | [274] Thomaz Bellucci v Liam Caruana [423] | 6-1,6-2 | |
| Challenger Prostejov | 06/06 16:05 | 26 | [67] Guillermo Garcia-Lopez v Thomaz Bellucci [278] | 6-1,7-6 | |
| Challenger Prostejov | 06/05 09:00 | 25 | [302] Martin Cuevas v Thomaz Bellucci [278] | 4-6,3-6 | |
| French Open | 05/27 16:15 | 23 | [66] Federico Delbonis v Thomaz Bellucci [269] | 6-1,6-3,3-6,6-1 | |
| French Open Qual | 05/25 08:00 | 46 | [111] Ruben Bemelmans v Thomaz Bellucci [269] | 2-6,6-2,5-7 | |
| French Open Qual | 05/23 15:45 | 45 | [269] Thomaz Bellucci v Daniel Gimeno-Traver [214] | 6-1,7-6 | |
| French Open Qual | 05/21 11:30 | 44 | [154] Matthias Bachinger v Thomaz Bellucci [269] | 3-6,4-6 | |
| Challenger Lisbon | 05/15 12:25 | 25 | [202] Miomir Kecmanovic v Thomaz Bellucci [249] | 6-3,7-6 | |
| Challenger Savannah | 05/04 20:05 | 27 | [244] Christian Harrison v Thomaz Bellucci [217] | 7-5,6-4 | |
| Challenger Savannah | 05/02 18:40 | 26 | [227] Jay Clarke v Thomaz Bellucci [217] | 7-6,3-6,3-6 | |
| Challenger Savannah | 04/30 22:40 | 25 | [217] Thomaz Bellucci v Peter Polansky [124] | 6-3,6-1 | |
| Challenger Tallahassee | 04/26 17:05 | 27 | [172] Hugo Dellien v Thomaz Bellucci [222] | 7-5,7-6 | |
| Challenger Tallahassee | 04/25 20:05 | 26 | [222] Thomaz Bellucci v Miomir Kecmanovic [201] | 6-3,6-2 | |
| Challenger Tallahassee | 04/23 20:00 | 25 | [498] Danny Thomas v Thomaz Bellucci [222] | 1-6,2-6 |