Stadium: Cancha 8 Round: 26 Ground: Clay
| Challenger San Luis Potosi | 2018/03/27 23:20 | Federico Coria v Pedro Sakamoto | 3-6,4-6 |
| Challenger San Luis Potosi Qual | 2018/03/26 19:35 | Pedro Sakamoto v Gonzalo Lama | 6-4,7-6 |
| Challenger San Luis Potosi Qual | 2018/03/26 00:25 | Pedro Sakamoto v Emilio Gomez | 6-2,6-2 |
| Challenger San Luis Potosi Qual | 2018/03/25 19:25 | Juan Ignacio Londero v Pedro Sakamoto | 6-4,5-7,5-7 |
| Challenger Santiago Qual | 2018/03/03 18:35 | Pedro Sakamoto v Miljan Zekic | 2-6,6-3,6-7 |
| 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 17:25 | Tommy Robredo v Pedro Sakamoto | 6-7,4-6 |
| ATP Quito Qual | 2018/02/04 17:00 | Andrej Martin v Pedro Sakamoto | 6-4,6-4 |
| Challenger San Luis Potosi | 2018/03/27 18:00 | Gerardo L Villasenor v Pedja Krstin | 2-6,3-6 |
| ATP Miami Qual | 2018/03/19 17:25 | Bjorn Fratangelo v Pedja Krstin | 4-6,6-3,6-0 |
| Challenger Irving | 2018/03/14 17:00 | Pedja Krstin v Tim Smyczek | 4-6,3-6 |
| Challenger Santiago | 2018/03/07 18:20 | Guido Andreozzi v Pedja Krstin | 6-3,6-4 |
| Challenger Santiago | 2018/03/05 16:30 | Pedja Krstin v Arthur De Greef | 6-3,3-6,6-0 |
| Challenger Punta del Este | 2018/02/28 21:00 | Pedja Krstin v Federico Gaio | 2-6,6-3,4-6 |
| Challenger Punta del Este | 2018/02/28 01:00 | Laslo Djere v Pedja Krstin | 3-6,6-7 |
| Challenger Morelos | 2018/02/23 20:00 | Dennis Novikov v Pedja Krstin | 6-1,6-4 |