Stadium: Court M Round: 25 Ground: Clay
| ITF Brazil F3 | 2018/05/11 18:25 | Pedro Sakamoto v Oscar Jose Gutierrez | 5-7,6-4,3-6 |
| ITF Brazil F3 | 2018/05/10 17:55 | Pedro Sakamoto v Camilo Ugo Carabelli | 5-7,6-2,6-3 |
| ITF Brazil F3 | 2018/05/08 13:00 | Pedro Sakamoto v Matos, Diego | 6-0,6-2 |
| ITF Brazil F2 | 2018/05/05 00:25 | Oscar Jose Gutierrez v Pedro Sakamoto | 6-3,2-6,6-3 |
| ITF Brazil F2 | 2018/05/03 23:20 | Pedro Sakamoto v Francisco Comesana | 6-1,6-0 |
| ITF Brazil F2 | 2018/05/01 15:00 | Pedro Sakamoto v Turini, Thales | 6-1,6-2 |
| ITF Brazil F2 | 2018/04/30 15:00 | Pedro Sakamoto v Juan Bautista Otegui | 7-5,6-3 |
| ITF Brazil F2 | 2018/04/29 15:00 | Pedro Sakamoto v Araujo, Rai Vicente de | 6-2,6-2 |
| Challenger Marburg | 2018/07/06 14:00 | Hugo Dellien v Lenz, Julian | 6-3,6-3 |
| Challenger Marburg | 2018/07/05 13:10 | Elliot Benchetrit v Lenz, Julian | 4-6,5-7 |
| Challenger Marburg | 2018/07/04 16:45 | Lenz, Julian v Rudolf Molleker | 3-6,6-3,7-6 |
| Challenger Marburg | 2018/07/02 14:00 | Sebastian Ofner v Lenz, Julian | 1-6,6-7 |
| Challenger Heilbronn Qual | 2018/05/14 11:55 | Daniel Masur v Lenz, Julian | 4-6,6-0,6-1 |
| Challenger Heilbronn Qual | 2018/05/13 13:00 | Lenz, Julian v Virgili, Adelchi | 6-3,6-2 |
| Challenger Heilbronn Qual | 2018/05/12 12:00 | Yakovlev, A. v Lenz, Julian | 0-6,0-6 |
| Challenger Ostrava Qual | 2018/04/28 10:40 | Lenz, Julian v Galarza, Juan Ignacio | 6-3,5-7,3-6 |