Newport Beach, USA, Doubles 01/24 23:50 26 Koolhof W / Sitak A v 후에이 T / 쿠들라 D 2-6,1-6
Australian Open MD 01/19 01:30 25 Koolhof W / Sitak A v 마라치 O / 파비치 M 7-6,4-6,4-6
Australian Open MD 01/17 01:40 24 Gojowczyk P / Mayer F v Koolhof W / Sitak A 2-6,1-6
Auckland, New Zealand, Doubles 01/09 08:30 26 Koolhof W / Sitak A v 칼라센 R / 베너스 M 1-6,7-6,7-10
Brisbane, Australia, Doubles 01/06 01:30 28 Koolhof W / Sitak A v 메이어 L / 제볼로즈 H 6-4,1-6,6-10
Brisbane, Australia, Doubles 01/03 03:10 27 Koolhof W / Sitak A v Johnson/Muller 7-6,7-5
Brisbane, Australia, Doubles 01/01 01:00 26 Koolhof W / Sitak A v Huey T / Martin F 6-3,6-2
Challenger Mouilleron le Captif MD 11/11 12:00 28 Koolhof W / Sitak A v Bednarek T / Pel D 6-4,6-7,10-12
Challenger Mouilleron le Captif MD 11/09 14:00 27 Koolhof W / Sitak A v Bury A / Siljestrom A 6-2,6-1
Challenger Brest MD 10/24 11:00 26 Koolhof W / Sitak A v 차르디 제 / 지아네시 알 5-7,4-6
ATP Antwerp MD 10/21 09:00 28 Gonzalez S / Peralta J v Koolhof W / Sitak A 7-5,6-3
ATP Antwerp MD 10/18 16:35 27 마르틴 F / 로젤-바셀린 E v Koolhof W / Sitak A 4-6,6-7
ATP Antwerp MD 10/17 17:40 26 스쿱스키 K / 스쿱스키 N v Koolhof W / Sitak A 4-6,6-4,8-10
Beijing, China, Doubles 10/02 11:00 26 Koolhof W / Sitak A v 델 포트로 유 / 마이엘 레 4-6,6-3,7-10
ATP Beijing Qual MD 09/30 09:02 - Koolhof W / Sitak A v Jebavy/Marrero 7-6,5-1
ATP Shenzhen MD 09/27 06:00 26 Begemann A / Skugor F v Koolhof W / Sitak A 7-5,7-6
ATP Metz MD 09/24 11:45 29 Benneteau J / Roger-Vasselin E v Koolhof W / Sitak A 7-5,6-3
ATP Metz MD 09/22 14:00 28 Koolhof W / Sitak A v Mirnyi M / Oswald P 6-4,3-6,10-7
ATP Metz MD 09/21 18:25 27 Koolhof W / Sitak A v Granollers M / Marrero D 6-2,5-7,10-8
ATP Metz MD 09/19 12:50 26 Koolhof W / Sitak A v Bury A / Zverev M 6-4,7-6
Challenger Szczecin MD 09/16 17:00 29 Koolhof W / Sitak A v Bury A / Siljestrom A 6-1,7-5
Challenger Szczecin MD 09/15 11:00 28 Koolhof W / Sitak A v Motti A / Oliveira G 6-4,6-3
Challenger Szczecin MD 09/14 14:00 27 Koolhof W / Sitak A v Bednarek T / Pel D 7-5,3-6,10-4
Challenger Szczecin MD 09/13 12:00 26 Koolhof W / Sitak A v Andreozzi G / Behar A 7-5,6-4
US Open MD 08/31 15:00 24 Koolhof W / Sitak A v Dodig I / Granollers M 6-7,3-6
Challenger Aptos MD 08/12 23:15 28 Koolhof W / Sitak A v 볼트 알 / 톰프슨 조 3-6,6-2,8-10
Challenger Aptos MD 08/12 17:00 27 Koolhof W / Sitak A v 프리츠 타 / 크루에겔 미 Walkover
Challenger Aptos MD 08/10 23:00 26 Koolhof W / Sitak A v Krajicek A / Withrow J 6-4,7-6
ATP Los Cabos MD 08/04 00:00 27 Koolhof W / Sitak A v Raja P / Sharan D 3-6,4-6
ATP Los Cabos MD 08/03 03:40 26 Koolhof W / Sitak A v 산틸란 아 / 베르다스코 페 Walkover