Stadium: Pista Central Round: 29 Ground: Hardcourt outdoor
| Challenger - Szczecin - HD | 2017/09/13 12:00 | Koolhof/Sitak v Andreozzi/Behar | 7-5,6-4 |
| Challenger - Alicante - HD | 2018/04/05 09:30 | Koolhof/Sitak v Martinez Portero/Vega Hernandez | 5-7,6-4,10-5 |
| Challenger - Alicante - HD | 2018/04/02 12:35 | Koolhof/Sitak v Cervantes/Marrero | 6-4,6-1 |
| Challenger Irving MD | 2018/03/16 23:10 | Petzschner/Peya v Koolhof/Sitak | 6-4,7-5 |
| Challenger Irving MD | 2018/03/15 22:25 | Koolhof/Sitak v Krajicek/Lacko | 6-1,6-4 |
| Challenger Irving MD | 2018/03/14 19:00 | Inglot/Skupski v Koolhof/Sitak | 6-3,1-6,6-10 |
| ATP Sao Paulo MD | 2018/03/04 17:20 | Koolhof/Sitak v Delbonis/Gonzalez | 4-6,2-6 |
| ATP Sao Paulo MD | 2018/03/03 20:00 | Berlocq/Kicker v Koolhof/Sitak | 3-6,3-6 |
| ATP Sao Paulo MD | 2018/02/28 20:45 | Koolhof/Sitak v C Baena/Garcia-Lopez | 7-5,6-4 |
| Challenger - Alicante - HD | 2018/04/05 14:30 | Andreozzi/Behar v Motti/Travaglia | 6-0,6-2 |
| Challenger - Marbella - HD | 2018/03/31 16:40 | Klizan/Kovalik v Andreozzi/Behar | 3-6,4-6 |
| Challenger - Marbella - HD | 2018/03/29 15:00 | Djokovic/Gomez-Herrera v Andreozzi/Behar | 6-1,5-7,5-10 |
| Challenger - Marbella - HD | 2018/03/28 15:05 | Brown/O'Mara v Andreozzi/Behar | 2-6,4-6 |
| Challenger - Szczecin - HD | 2017/09/13 12:00 | Koolhof/Sitak v Andreozzi/Behar | 7-5,6-4 |
| Challenger - Genua - HD | 2017/09/10 14:00 | Andreozzi/Behar v Puetz/Struff | 6-7,6-7 |
| Challenger - Genua - HD | 2017/09/09 09:00 | Brown/Mies v Andreozzi/Behar | 3-6,7-6,10-12 |
| Challenger - Genua - HD | 2017/09/07 13:40 | Balazs/Fucsovics v Andreozzi/Behar | 5-7,4-6 |