Stadium: La Foret 4 Round: 45 Ground: Hardcourt indoor
| Istanbul, Turkey | 2018/09/10 07:30 | van Rijthoven, Tim v Simon, Tobias | 6-3,7-6 |
| Istanbul, Turkey | 2018/09/09 09:00 | Polyakov, Vladimir v Simon, Tobias | 0-6,3-6 |
| Istanbul, Turkey | 2018/09/08 07:00 | Stoute, Isaac v Simon, Tobias | 3-6,6-4,4-6 |
| Challenger Mallorca | 2018/08/28 09:30 | Simon, Tobias v Guttierrez-Ferrol, Sergio | 6-3,6-2 |
| Challenger Mallorca | 2018/08/27 11:10 | Simon, Tobias v Hugo Grenier | 7-5,2-6,7-6 |
| Challenger Mallorca | 2018/08/26 15:45 | Simon, Tobias v Federico Zeballos | 7-6,7-6 |
| Challenger Mallorca | 2018/08/26 10:45 | Mertens, Yannick v Simon, Tobias | 7-6,4-6,4-6 |
| Challenger Pullach Qual | 2018/08/04 15:25 | Zizou Bergs v Simon, Tobias | 6-4,7-6 |
| Pullach, Germany | 2018/08/09 11:00 | Berlocq, Carlos v Puetz, Tim | 7-6,7-5 |
| Pullach, Germany | 2018/08/07 11:35 | Puetz, Tim v Casper Ruud | 6-2,3-6,7-6 |
| ATP Stuttgart Qual | 2018/06/10 11:00 | Puetz, Tim v Viola, Matteo | 3-6,6-7 |
| ATP Stuttgart Qual | 2018/06/09 09:00 | Lacko, Lukas v Puetz, Tim | 7-6,5-7,1-6 |
| Challenger Loughborough | 2018/05/24 11:30 | Puetz, Tim v Hiroki Moriya | 5-7,0-6 |
| Challenger Loughborough | 2018/05/22 09:00 | Puetz, Tim v Marek Jaloviec | 7-6,6-1 |
| Challenger - Heilbronn | 2018/05/17 12:50 | Oscar Otte v Puetz, Tim | 7-5,6-7,7-6 |
| Challenger - Heilbronn | 2018/05/15 18:05 | Puetz, Tim v Norbert Gombos | 6-4,4-6,6-3 |