26.09.15 | 1/2 | Wesley Koolhof/Matwe Middelkoop | Lucas Miedler/Tristan-Samuel Weissborn | 7-62, 6-3 | | match details | Trnava Challenger | Clay |
26.09.15 | fin | Wesley Koolhof/Matwe Middelkoop | Kamil Majchrzak/Stephane Robert | 6-4, 6-2 | | match details |
24.09.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Uladzimir Ignatik/Dusan Lojda | 6-4, 6-4 | | match details |
23.09.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Riccardo Bellotti/Pascal Brunner | 6-2, 6-4 | | match details |
11.09.15 | fin | Wesley Koolhof/Matwe Middelkoop | Marco Bortolotti/Kamil Majchrzak | 7-65, 6-4 | | match details | Seville Challenger | Clay |
10.09.15 | 1/2 | Wesley Koolhof/Matwe Middelkoop | Pedro Cachin/Jaume Antoni Munar Clar | 7-62, 6-3 | | match details |
09.09.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Renzo Olivo/Fernando Romboli | 6-4, 6-2 | | match details |
07.09.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Jozef Kovalik/Jan Mertl | 4-6, 6-3, 10-4 | | match details |
24.08.15 | fin | Wesley Koolhof/Matwe Middelkoop | Oscar Otte/Matthias Wunner | 6-3, 6-3 | | match details | Netherlands F6 | Clay |
24.08.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Bobbie De Goeijen/Constant Lestienne | 6-1, 6-4 | | match details |
24.08.15 | 1/2 | Wesley Koolhof/Matwe Middelkoop | Jan Choinski/Goncalo Oliveira | 6-2, 6-1 | | match details |
23.08.15 | fin | Dustin Brown/Rameez Junaid | Wesley Koolhof/Matwe Middelkoop | 6-4, 7-5 | | match details | Meerbusch Challenger | Clay |
21.08.15 | 1/2 | Wesley Koolhof/Matwe Middelkoop | Cesar Ramirez/Miguel-Angel Reyes-Varela | 7-66, 6-1 | | match details |
20.08.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Gero Kretschmer/Alexander Satschko | 6-4, 3-6, 10-2 | | match details |
19.08.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Sander Arends/Ariel Behar | 6-3, 6-2 | | match details |
15.08.15 | fin | Wesley Koolhof/Matwe Middelkoop | Sergey Betov/Mikhail Elgin | 6-4, 3-6, 10-7 | | match details | Prague Challenger | Clay |
14.08.15 | 1/2 | Wesley Koolhof/Matwe Middelkoop | Dino Marcan/Hans Podlipnik-Castillo | 6-3, 7-67 | | match details |
13.08.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Jan Mertl/Libor Salaba | 6-2, 6-3 | | match details |
12.08.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Adrian Sikora/Robin Stanek | 6-3, 7-63 | | match details |
08.08.15 | fin | Andrej Martin/Hans Podlipnik-Castillo | Wesley Koolhof/Matwe Middelkoop | 7-5, 6-73, 10-5 | | match details | Liberec Challenger | Clay |
07.08.15 | 1/2 | Wesley Koolhof/Matwe Middelkoop | Lubomir Majsajdr/Martin Zahradka | 6-1, 6-2 | | match details |
06.08.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Jan Kuncik/Libor Salaba | 6-0, 6-4 | | match details |
05.08.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Ilija Bozoljac/Flavio Cipolla | 7-5, 4-6, 10-5 | | match details |
08.07.15 | 1st round | Damir Dzumhur/Franko Skugor | Wesley Koolhof/Matwe Middelkoop | 6-4, 2-6, 11-9 | | match details | Braunschweig Challenger | Clay |
04.07.15 | fin | Wesley Koolhof/Matwe Middelkoop | Tobias Kamke/Simon Stadler | 6-1, 7-5 | | match details | Marburg Challenger | Clay |
03.07.15 | 1/2 | Wesley Koolhof/Matwe Middelkoop | Andrey Golubev/Alexandre Sidorenko | 6-3, 6-4 | | match details |
02.07.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Yannick Hanfmann/Julian Lenz | 6-1, 6-4 | | match details |
30.06.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Jan Choinski/Jannis Kahlke | 5-0, Jan Choinski/Jannis Kahlke - retired | | match details |
14.05.15 | 1/4 | Dominik Meffert/Tim Puetz | Wesley Koolhof/Matwe Middelkoop | 7-64, 4-6, 10-6 | | match details | Heilbronn Challenger | Clay |
13.05.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Jesse Huta Galung/Konstantin Kravchuk | 6-73, 7-5, 10-7 | | match details |
08.05.15 | 1/2 | Dustin Brown/Frantisek Cermak | Wesley Koolhof/Matwe Middelkoop | 7-5, 1-6, 10-6 | | match details | Rome Challenger | Clay |
06.05.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Aljaz Bedene/David Rice | 5-7, 6-3, 10-8 | | match details |
05.05.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Andrej Martin/Hans Podlipnik-Castillo | 6-3, 6-2 | | match details |
02.05.15 | fin | Wesley Koolhof/Matwe Middelkoop | Dino Marcan/Antonio Sancic | 4-6, 6-3, 10-5 | | match details | Turin Challenger | Clay |
01.05.15 | 1/2 | Wesley Koolhof/Matwe Middelkoop | Ilija Bozoljac/Malek Jaziri | 6-1, 6-2 | | match details |
30.04.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Daniele Giorgini/Adrian Ungur | 7-66, 6-3 | | match details |
29.04.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Francesco Borgo/Gianluca Naso | 6-1, 6-4 | | match details |
23.04.15 | 1/2 | Andrea Arnaboldi/Hans Podlipnik-Castillo | Wesley Koolhof/Matwe Middelkoop | 6-4, 2-6, 10-2 | | match details | Vercelli Challenger | Clay |
22.04.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Mateusz Kowalczyk/Igor Zelenay | 6-3, 7-5 | | match details |
21.04.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Mao-Xin Gong/Hsien-Yin Peng | 6-3, 6-4 | | match details |
15.01.15 | 1/2 | Flavio Cipolla/Alessandro Motti | Wesley Koolhof/Matwe Middelkoop | 6-76, 6-4, 10-5 | | match details | Casablanca Challenger | Clay |
14.01.15 | 1/4 | Wesley Koolhof/Matwe Middelkoop | Nikola Mektic/Franko Skugor | 7-65, 6-4 | | match details |
12.01.15 | 1st round | Wesley Koolhof/Matwe Middelkoop | Martin Emmrich/Andreas Siljestrom | 6-4, 7-65 | | match details |