Stadium: Cancha Central Round: 25 Ground: Clay
| ATP Sao Paulo | 2018/03/01 18:05 | Albert Ramos-Vinolas v Guilherme Clezar | 6-3,6-4 |
| ATP Sao Paulo | 2018/02/28 02:05 | Guilherme Clezar v Thiago Monteiro | 6-3,1-6,7-5 |
| ATP Sao Paulo Qual | 2018/02/25 16:10 | Pedro Sakamoto v Guilherme Clezar | 2-6,1-6 |
| ATP Sao Paulo Qual | 2018/02/24 19:20 | Fernando Yamacita v Guilherme Clezar | 1-6,6-7 |
| ATP Rio De Janeiro Qual | 2018/02/17 18:00 | Guilherme Clezar v Alessandro Giannessi | 7-6,4-6,3-6 |
| ATP Buenos Aires Qual | 2018/02/11 16:00 | Rogerio Dutra Silva v Guilherme Clezar | 7-6,7-6 |
| ATP Buenos Aires Qual | 2018/02/10 14:00 | Guilherme Clezar v Renzo Olivo | 7-5,6-0 |
| ATP Quito Qual | 2018/02/03 16:00 | Gonzalo Escobar v Guilherme Clezar | 6-7,7-6,6-4 |
| ATP Sao Paulo | 2018/02/27 22:30 | Thomaz Bellucci v Horacio Zeballos | 6-7,6-3,3-6 |
| ATP Rio De Janeiro | 2018/02/20 00:20 | Fabio Fognini v Thomaz Bellucci | 6-7,7-5,6-2 |
| ATP Buenos Aires | 2018/02/14 21:45 | Diego Schwartzman v Thomaz Bellucci | 3-6,6-3,6-2 |
| ATP Buenos Aires | 2018/02/12 20:25 | Thomaz Bellucci v Pedro Cachin | 6-2,6-1 |
| ATP Buenos Aires Qual | 2018/02/11 16:55 | Thomaz Bellucci v Hernan Casanova | 6-2,6-4 |
| ATP Buenos Aires Qual | 2018/02/10 19:00 | Thomaz Bellucci v Juan Ignacio Galarza | 6-4,6-4 |
| ATP Quito | 2018/02/06 00:40 | Victor Estrella Burgos v Thomaz Bellucci | 4-6,6-4,6-2 |
| US Open | 2017/08/30 18:40 | Dustin Brown v Thomaz Bellucci | 6-4,6-3,6-2 |