Stadium: Court 6 Round: 25
| ITF Turkey F34 | 2017/09/15 12:40 | Onishi, Ken v Heras, Patricio | 1-6,1-6 |
| ITF Italy F11 | 2018/05/24 11:00 | Heras, Patricio v Lazov, Alexander | 2-6,7-6,1-6 |
| ITF Italy F11 | 2018/05/23 11:45 | Heras, Patricio v Balzerani, Riccardo | 6-2,3-6,6-4 |
| Samarkand, Uzbekistan | 2018/05/15 09:50 | Ivan Gakhov v Heras, Patricio | 7-5,7-6 |
| Challenger - Rome | 2018/05/10 12:50 | Heras, Patricio v Pavlasek, Adam | 6-7,1-6 |
| Challenger - Rome | 2018/05/09 10:05 | Heras, Patricio v Galovic, Viktor | 7-6,6-0 |
| Challenger - Rome | 2018/05/08 08:30 | Heras, Patricio v Giovanni Fonio | 6-4,3-6,7-5 |
| Challenger Rome Qual | 2018/05/07 08:00 | Haider-Maurer, Andreas v Heras, Patricio | 7-6,6-4 |
| Challenger Rome Qual | 2018/05/06 11:40 | Enrico Dalla Valle v Heras, Patricio | 4-6,4-6 |
| ITF Hungary F4 Qual | 2018/06/11 08:00 | Onishi, Ken v Kristjan Tamm | 6-3,2-6,6-3 |
| ITF Hungary F4 Qual | 2018/06/10 08:00 | Onishi, Ken v Boris Butulija | 6-4,6-7,6-4 |
| ITF Czech Republic F3 | 2018/05/31 12:35 | Marek Jaloviec v Onishi, Ken | 6-2,6-3 |
| ITF Hungary F3 | 2018/05/23 08:00 | Bensoussan, Samuel v Onishi, Ken | 6-1,6-4 |
| ITF Hungary F3 | 2018/05/22 11:20 | Onishi, Ken v Maruscak, Matej | 6-1,6-4 |
| ITF Bosnia and Herzegovina F1 | 2018/05/16 12:30 | Onishi, Ken v Zgombic, Fran Zvonimir | 6-2,3-6,4-6 |
| ITF Turkey F13 | 2018/04/01 08:30 | Onishi, Ken v Soares Klier, Gilbert | 3-6,6-7 |
| ITF Turkey F13 | 2018/03/31 08:30 | Onishi, Ken v Kerdlaphee, Phongsapak | 6-4,6-2 |