Stadium: Court 16 Round: 24 Ground: Clay
| ATP - Genève - Doubles Hommes | 2018/05/22 10:00 | Lindstedt R / Vasilevski A v Begemann A / Sancic A | 7-6,7-6 |
| Challenger - Aix en Provence - Doubles Hommes | 2018/05/09 10:30 | Arneodo/Nys v Begemann A / Sancic A | 6-3,4-6,10-6 |
| Istanbul, Turkey, Doubles | 2018/05/02 14:15 | Molchanov D / Skugor F v Begemann A / Sancic A | 6-1,7-6 |
| Challenger - Sarasota - Doubles Hommes | 2018/04/21 16:15 | Begemann A / Sancic A v Harrison C / Polansky P | 7-5,3-6,5-10 |
| Challenger - Sarasota - Doubles Hommes | 2018/04/19 17:30 | Cuevas M / Dellien H v Begemann A / Sancic A | 1-6,6-3,7-10 |
| ATP - Houston - Doubles Hommes | 2018/04/14 23:45 | Mirnyi M / Oswald P v Begemann A / Sancic A | 6-7,6-4,11-9 |
| ATP - Houston - Doubles Hommes | 2018/04/13 22:00 | Begemann A / Sancic A v Brown/Tiafoe | 6-3,3-6,10-7 |
| ATP - Houston - Doubles Hommes | 2018/04/12 22:35 | Begemann A / Sancic A v Gonzalez S / Young D | 7-6,6-2 |
| ATP - Genève - Doubles Hommes | 2018/05/22 10:00 | Lipsky S / Marrero D v Koolhof W / Sitak A | 7-6,4-6,10-7 |
| Challenger - Bordeaux - Doubles Hommes | 2018/05/14 10:15 | Koolhof W / Sitak A v Albot R / Kozlov S | 5-7,1-6 |
| ATP - Estoril - Doubles Hommes | 2018/05/06 12:00 | Koolhof W / Sitak A v Edmund K / Norrie C | 4-6,2-6 |
| ATP - Estoril - Doubles Hommes | 2018/05/05 12:00 | Eysseric J / Salisbury J v Koolhof W / Sitak A | 5-7,3-6 |
| ATP - Estoril - Doubles Hommes | 2018/05/03 13:45 | Koolhof W / Sitak A v Elias G / Sousa P | 7-6,4-6,10-8 |
| ATP - Estoril - Doubles Hommes | 2018/05/02 11:00 | Lopez M / Marrero D v Koolhof W / Sitak A | 7-6,4-6,3-10 |
| Budapest, Hungary, Doubles | 2018/04/26 09:00 | Koolhof W / Sitak A v Matkowski M / Monroe N | 3-6,4-6 |
| Budapest, Hungary, Doubles | 2018/04/25 09:00 | Mektic N / Peya A v Koolhof W / Sitak A | 5-7,7-6,7-10 |