Stadium: A Round: 44 Ground: Carpet indoor
| ITF Egypt F2 | 2018/01/24 09:40 | Haerteis, Johannes v Hossam, Youssef | 6-7,4-6 |
| ITF Egypt F2 | 2018/01/22 08:00 | Pierre, Hugo v Haerteis, Johannes | 6-7,1-6 |
| ITF Egypt F2 | 2018/01/21 10:00 | Kaza, Vinayak Sharma v Haerteis, Johannes | 3-6,2-6 |
| ITF Egypt F2 | 2018/01/20 08:00 | van Buuren, Ilco v Haerteis, Johannes | 3-6,2-6 |
| ITF Egypt F1 | 2018/01/15 10:00 | Haerteis, Johannes v Fabian Marozsan | 2-6,4-6 |
| ITF Egypt F1 | 2018/01/14 08:00 | Haerteis, Johannes v Jannik Sinner | 6-3,5-7,7-5 |
| Challenger Eckental Qual | 2017/10/28 09:00 | Evan Furness v Haerteis, Johannes | 3-6,7-6,7-6 |
| ITF Czech Republic F7 | 2017/10/25 08:00 | Kalenichenko, Danylo v Haerteis, Johannes | 6-4,6-2 |
| ITF Switzerland F1 Qual | 2018/02/04 09:00 | Kunz, Giordan v Hoeveler, Leon | 6-3,7-6 |
| ITF Italy F34 Qual | 2017/10/14 13:00 | Kunz, Giordan v Krivokuca, Neven | 0-6,0-6 |
| ITF Italy F33 Qual | 2017/10/08 13:00 | Kunz, Giordan v Nikolic, Milos | 5-7,4-6 |
| ITF Germany F12 | 2017/08/21 08:00 | Kunz, Giordan v Link, Joel Vincent | 0-6,1-6 |
| ITF Greece F5 | 2017/04/02 06:30 | Zgombic, Fran Zvonimir v Kunz, Giordan | 7-5,4-6,6-1 |
| ITF Greece F5 | 2017/04/01 06:30 | Kunz, Giordan v Witt, Taylor | 6-3,6-4 |
| ITF Greece F4 | 2017/03/26 10:00 | Ben Jones v Kunz, Giordan | 7-6,6-2 |
| ITF Switzerland F5 Qual | 2016/08/28 12:20 | Mrose, Oliver v Kunz, Giordan | 4-6,6-3,6-4 |