Stadium: Cancha Siete Leguas Round: 46 Ground: Hardcourt outdoor
| ITF Colombia F1 | 2016/06/15 17:00 | Boris Arias v Diaz-Figueroa, Christopher | 6-4,2-6,1-6 |
| Challenger Puerto Vallarta Qual | 2018/04/28 18:15 | Merino, Alexander v Boris Arias | 6-3,4-6,2-6 |
| Coupe Davis | 2018/04/08 16:40 | Boris Arias v Marrero, Juan Enrique | 6-3,6-1 |
| Challenger San Luis Potosi Qual | 2018/03/25 20:25 | Rodriguez, Cristian v Boris Arias | 4-6,6-1,6-2 |
| ITF USA F8 Qual | 2018/03/18 16:00 | Ram-Harel, Or v Boris Arias | 6-1,6-2 |
| ITF USA F7 Qual | 2018/03/12 18:45 | Rodriguez-Pace, Ricardo v Boris Arias | 6-3,7-5 |
| ITF USA F7 Qual | 2018/03/11 18:00 | Samuelsson, Christian v Boris Arias | 1-6,6-3,3-6 |
| ITF USA F7 Qual | 2018/03/10 17:00 | Wally Thayne v Boris Arias | 2-6,1-6 |
| Challenger Morelos Qual | 2018/02/17 21:00 | Emilio Gomez v Boris Arias | 6-2,6-4 |
| Challenger Puerto Vallarta Qual | 2018/04/28 17:50 | Ortiz, Ricardo v Diaz-Figueroa, Christopher | 1-6,2-6 |
| Challenger Leon Qual | 2018/04/22 16:00 | Diaz-Figueroa, Christopher v Viktor Durasovic | 4-6,3-6 |
| Challenger Leon Qual | 2018/04/21 15:00 | Diaz-Figueroa, Christopher v Panta Herreros, Jorge Brian | 6-3,7-5 |
| Coupe Davis | 2018/04/07 19:50 | Diaz-Figueroa, Christopher v Alvarado Larin, Alberto Emmanuel | 6-3,6-4 |
| ITF Egypt F9 | 2018/03/13 08:00 | Baltensperger, Raphael v Diaz-Figueroa, Christopher | 5-7,2-6 |
| ITF Egypt F8 | 2018/03/06 08:00 | Lukas Klein v Diaz-Figueroa, Christopher | 5-7,6-3,6-3 |
| Egypt F7, Singles Qualifying | 2018/02/27 08:00 | Diaz-Figueroa, Christopher v Rudolf Molleker | 6-3,5-7,4-6 |
| Egypt F6, Singles Qualifying | 2018/02/21 08:00 | Lucas Miedler v Diaz-Figueroa, Christopher | 6-7,6-3,6-3 |