17.03.21 | 1st round | Leonardo Civita-Telles/Yanais Laurent | Kai Lemstra/Christoph Negritu | 6-0, 6-4 | | match details | M15 Monastir | Hard |
09.03.21 | 1st round | Stefano Battaglino/Yanais Laurent | Kai Lemstra/Christoph Negritu | 6-75, 6-3, 10-7 | | match details | M15 Monastir | Hard |
02.03.21 | 1st round | Aziz Dougaz/Moez Echargui | Kai Lemstra/Christoph Negritu | 7-5, 6-3 | | match details | M15 Monastir | Hard |
29.02.20 | fin | Patrik Rikl/Jan Satral | Kai Lemstra/Christoph Negritu | 6-3, 6-4 | | match details | M15 Trnava | I. hard |
28.02.20 | 1/2 | Kai Lemstra/Christoph Negritu | Piotr Grynkowski/Piotr Matuszewski | 7-5, 7-64 | | match details |
26.02.20 | 1/4 | Kai Lemstra/Christoph Negritu | Uladzimir Ignatik/Aldin Setkic | Uladzimir Ignatik/Aldin Setkic - walk over | | match details |
22.02.20 | fin | Lasse Muscheites/Stefan Seifert | Kai Lemstra/Christoph Negritu | 6-3, 7-5 | | match details | M15 Oberhaching | I. hard |
21.02.20 | 1/2 | Kai Lemstra/Christoph Negritu | Ondrej Krstev/Dalibor Svrcina | 7-5, 7-5 | | match details |
20.02.20 | 1/4 | Kai Lemstra/Christoph Negritu | Linus Frost/Christian Samuelsson | 6-2, 6-2 | | match details |
18.02.20 | 1st round | Kai Lemstra/Christoph Negritu | Sebastian Prechtel/Michael Weindl | 6-0, 6-3 | | match details |
04.02.19 | 1/2 | Mats Rosenkranz/Mark Whitehouse | Kai Lemstra/Christoph Negritu | 4-6, 6-4, 10-8 | | match details | M15 Kaarst | Carpet |
04.02.19 | 1/4 | Kai Lemstra/Christoph Negritu | Maikel Borg/Mick Veldheer | 7-63, 6-4 | | match details |
04.02.19 | 1st round | Kai Lemstra/Christoph Negritu | Ondrej Krstev/Robin Stanek | 7-65, 7-5 | | match details |
01.10.18 | 1st round | Kai Lemstra/Christoph Negritu | Paul Cayre/Leonard Von Hindte | 6-2, 6-4 | | match details | Germany F14 | I. hard |
01.10.18 | 1/4 | Kai Lemstra/Christoph Negritu | Max Hans Rehberg/Jeremy Schifris | 4-6, 6-1, 10-3 | | match details |
01.10.18 | 1/2 | Kai Lemstra/Christoph Negritu | Luke Jacob Gamble/Christian Seraphim | 7-63, 6-3 | | match details |
01.10.18 | fin | Filip Duda/Petr Nouza | Kai Lemstra/Christoph Negritu | 7-5, 7-64 | | match details |
09.07.18 | 1st round | Kai Lemstra/Christoph Negritu | Feda Bilic/Danut Cuc | 6-1, 6-3 | | match details | Germany F7 | Clay |
09.07.18 | 1/4 | Kai Lemstra/Christoph Negritu | Adrian Bodmer/Matthias Haim | 1-6, 6-3, 10-8 | | match details |
09.07.18 | fin | Jose Daniel Bendeck/Eduardo Struvay | Kai Lemstra/Christoph Negritu | 6-2, 6-2 | | match details |
09.07.18 | 1/2 | Kai Lemstra/Christoph Negritu | Karol Drzewiecki/Alexis Klegou | 6-1, 1-6, 11-9 | | match details |
29.01.18 | 1st round | Kai Lemstra/Christoph Negritu | Tim Gennes/Goran Tufekcic | 6-4, 6-1 | | match details | Germany F3 | Carpet |
29.01.18 | fin | Remi Boutillier/Hugo Voljacques | Kai Lemstra/Christoph Negritu | 6-1, 6-2 | | match details |
29.01.18 | 1/4 | Kai Lemstra/Christoph Negritu | Glenn Smits/Colin Van Beem | 6-3, 7-63 | | match details |
29.01.18 | 1/2 | Kai Lemstra/Christoph Negritu | Marvin Greven/Alexander Mannapov | 4-6, 6-4, 10-8 | | match details |