Stadium: Court 1 Round: 27 Ground: Hardcourt indoor
| ATP Montpellier MD | 2018/02/07 19:25 | Dodig I / Ram R v Koolhof W / Sitak A | 6-2,5-7,0-10 |
| Newport Beach, USA, Doubles | 2018/01/24 23:50 | Koolhof W / Sitak A v 후에이 T / 쿠들라 D | 2-6,1-6 |
| Australian Open MD | 2018/01/19 01:30 | Koolhof W / Sitak A v 마라치 O / 파비치 M | 7-6,4-6,4-6 |
| Australian Open MD | 2018/01/17 01:40 | Gojowczyk P / Mayer F v Koolhof W / Sitak A | 2-6,1-6 |
| Auckland, New Zealand, Doubles | 2018/01/09 08:30 | Koolhof W / Sitak A v 칼라센 R / 베너스 M | 1-6,7-6,7-10 |
| Brisbane, Australia, Doubles | 2018/01/06 01:30 | Koolhof W / Sitak A v 메이어 L / 제볼로즈 H | 6-4,1-6,6-10 |
| Brisbane, Australia, Doubles | 2018/01/03 03:10 | Koolhof W / Sitak A v Johnson/Muller | 7-6,7-5 |
| Brisbane, Australia, Doubles | 2018/01/01 01:00 | Koolhof W / Sitak A v Huey T / Martin F | 6-3,6-2 |
| ATP Montpellier MD | 2018/02/06 18:35 | Arends S / Sancic A v 가르시아-로페즈 G / 마르레로 D | 5-7,6-2,10-8 |
| Challenger Quimper MD | 2018/02/02 11:00 | 길 S / 블리에겐 J v Arends S / Sancic A | 6-1,6-4 |
| Challenger Quimper MD | 2018/01/31 18:30 | 바식 미 / 세트키크 알 v Arends S / Sancic A | 4-6,0-6 |
| Challenger Rennes MD | 2018/01/28 12:30 | 길 S / 블리에겐 J v Arends S / Sancic A | 6-3,6-7,10-7 |
| Challenger Rennes MD | 2018/01/26 11:30 | 발라지 N S / 바르단 V v Arends S / Sancic A | 4-6,4-6 |
| Koblenz, Germany, Doubles | 2018/01/21 11:00 | Arends S / Sancic A v 아르네오도 로 / 베이스보른 트 | 7-6,5-7,6-10 |
| Koblenz, Germany, Doubles | 2018/01/20 11:30 | Arends S / Sancic A v Panfil G / Uzhylovskyi V | 6-4,3-6,11-9 |
| Koblenz, Germany, Doubles | 2018/01/18 15:35 | Arends S / Sancic A v 콜라르 즈 / 파블라세크 아 | 7-6,2-6,10-5 |