Stadium: Court 12 Round: 25 Ground: Clay
| ATP - Montpellier - Herredouble | 2018/02/07 19:25 | Dodig/Ram v Koolhof/Sitak | 6-2,5-7,0-10 |
| French Open - Herredouble | 2018/05/29 15:30 | Begemann/Sancic v Koolhof/Sitak | 7-6,2-6,4-6 |
| ATP - Geneva - Herredouble | 2018/05/22 10:00 | Lipsky/Marrero v Koolhof/Sitak | 7-6,4-6,10-7 |
| Challenger - Bordeaux - Herredouble | 2018/05/14 10:15 | Koolhof/Sitak v Albot/Kozlov | 5-7,1-6 |
| ATP - Estoril - Herredouble | 2018/05/06 12:00 | Koolhof/Sitak v Edmund/Norrie | 4-6,2-6 |
| ATP - Estoril - Herredouble | 2018/05/05 12:00 | Eysseric/Salisbury v Koolhof/Sitak | 5-7,3-6 |
| ATP - Estoril - Herredouble | 2018/05/03 13:45 | Koolhof/Sitak v Elias/Sousa | 7-6,4-6,10-8 |
| ATP - Estoril - Herredouble | 2018/05/02 11:00 | Lopez/Marrero v Koolhof/Sitak | 7-6,4-6,3-10 |
| ATP Budapest MD | 2018/04/26 09:00 | Koolhof/Sitak v Matkowski/Monroe | 3-6,4-6 |
| French Open - Herredouble | 2018/05/30 09:00 | Podlipnik-Castillo/Withrow v Dodig/Ram | 6-4,4-6,1-6 |
| ATP - Geneva - Herredouble | 2018/05/26 11:00 | Marach/Pavic v Dodig/Ram | 3-6,7-6,11-9 |
| ATP - Geneva - Herredouble | 2018/05/25 16:15 | Johnson/Querrey v Dodig/Ram | 6-7,4-6 |
| ATP - Geneva - Herredouble | 2018/05/24 11:20 | Lipsky/Marrero v Dodig/Ram | 6-4,1-6,3-10 |
| ATP - Geneva - Herredouble | 2018/05/22 12:10 | Arends/Shamasdin v Dodig/Ram | 3-6,6-7 |
| ATP - Madrid - Herredouble | 2018/05/10 19:45 | Dodig/Ram v Mclachlan/Struff | 1-6,3-6 |
| ATP - München - Herredouble | 2018/05/06 09:30 | Mektic/Peya v Dodig/Ram | 3-6,5-7 |
| ATP - München - Herredouble | 2018/05/05 09:30 | Puetz/Struff v Dodig/Ram | 1-6,3-6 |