| Challenger de Sarasota | 04/18 19:40 | 26 | [223] Facundo Bagnis v Thomaz Bellucci [224] | 3-6,6-4,7-5 | |
| Challenger de Sarasota | 04/16 14:00 | 25 | [334] JC Aragone v Thomaz Bellucci [224] | 4-6,1-6 | |
| ATP Houston Clasificación | 04/07 21:25 | 26 | [145] Thomaz Bellucci v Stefan Kozlov [182] | 7-6,3-6,6-7 | |
| Challenger de San Luis Potosí | 03/30 01:55 | 26 | [286] Daniel Elahi Galan v Thomaz Bellucci [135] | 6-3,6-3 | |
| Challenger de San Luis Potosí | 03/28 00:00 | 25 | [238] Andrea Collarini v Thomaz Bellucci [135] | 3-6,4-6 | |
| Challenger de Santiago | 03/08 16:00 | 27 | Jozef Kovalik v Thomaz Bellucci | 6-7,7-6,6-3 | |
| Challenger de Santiago | 03/07 17:10 | 26 | Renzo Olivo v Thomaz Bellucci | 1-6,4-6 | |
| Challenger de Santiago | 03/06 16:20 | 25 | Facundo Arguello v Thomaz Bellucci | 2-6,3-6 | |
| Challenger de Santiago | 03/05 18:55 | 25 | Guilherme Clezar v Thomaz Bellucci | View | |
| ATP São Paulo | 02/27 22:30 | 25 | Thomaz Bellucci v Horacio Zeballos | 6-7,6-3,3-6 | |
| ATP Río de Janeiro | 02/20 00:20 | 25 | Fabio Fognini v Thomaz Bellucci | 6-7,7-5,6-2 | |
| ATP Buenos Aires | 02/14 21:45 | 26 | Diego Schwartzman v Thomaz Bellucci | 3-6,6-3,6-2 | |
| ATP Buenos Aires | 02/12 20:25 | 25 | Thomaz Bellucci v Pedro Cachin | 6-2,6-1 | |
| ATP Buenos Aires - Clasificación | 02/11 16:55 | - | Thomaz Bellucci v Hernan Casanova | 6-2,6-4 | |
| ATP Buenos Aires - Clasificación | 02/10 19:00 | 26 | Thomaz Bellucci v Juan Ignacio Galarza | 6-4,6-4 | |
| ATP Quito | 02/06 00:40 | 25 | Victor Estrella Burgos v Thomaz Bellucci | 4-6,6-4,6-2 | |
| US Open | 08/30 18:40 | 23 | [116] Dustin Brown v Thomaz Bellucci [76] | 6-4,6-3,6-2 | |
| ATP Kitzbuhel | 08/03 11:50 | 27 | [80] Thomaz Bellucci v Fabio Fognini [25] | 3-6,1-6 | |
| ATP Kitzbuhel | 08/02 10:55 | 26 | [53] Jan-Lennard Struff v Thomaz Bellucci [80] | 4-6,6-7 | |
| ATP Kitzbuhel | 07/31 12:45 | 25 | [80] Thomaz Bellucci v Alexandr Dolgopolov [70] | 6-2,5-7,6-4 | |
| ATP Gstaad | 07/26 13:00 | 25 | [66] Thomaz Bellucci v Henri Laaksonen [95] | 6-7,7-6,5-7 | |
| ATP Bastad | 07/18 11:45 | 25 | [65] Thomaz Bellucci v Dustin Brown [93] | 4-6,3-6 | |
| Challenger de Braunschweig | 07/11 13:25 | 25 | [115] Gastao Elias v Thomaz Bellucci [55] | 7-5,6-2 | |
| Wimbledon | 07/04 15:55 | 23 | [55] Thomaz Bellucci v Sebastian Ofner [217] | 2-6,3-6,2-6 | |
| ATP Eastbourne | 06/26 12:20 | 25 | [53] Thomaz Bellucci v Kevin Anderson [45] | 3-6,1-6 | |
| Open de Francia | 05/31 15:50 | 24 | [17] Lucas Pouille v Thomaz Bellucci [61] | 7-6,6-1,6-2 | |
| Open de Francia | 05/28 14:45 | 23 | [59] Thomaz Bellucci v Dusan Lajovic [79] | 4-6,7-5,6-4,6-4 | |
| ATP Ginebra | 05/21 14:50 | 25 | [59] Thomaz Bellucci v Andrey Kuznetsov [81] | 6-3,4-6,1-6 | |
| ATP Roma | 05/15 11:10 | 24 | [10] David Goffin v Thomaz Bellucci [59] | 6-7,6-3,6-4 | |
| ATP Roma - Clasificación | 05/14 13:20 | 46 | [54] Thomaz Bellucci v Thiago Monteiro [100] | 3-6,6-7 |