| Malaysia Masters - Men's Doubles from 15 January to 20 January 2019 |
|---|
| Round of 32 |  M. Lamsfuss - M. Seidel | defeated by |  K. Chooi - J. Low | 21-13 20-22 21-19 |
Malaysia Masters - Mixed Doubles from 15 January to 20 January 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat |  R. Ronald - A. Saufika | 19-21 21-17 24-22 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by |  D. Puavaranukroh - S. Taerattanachai | 21-9 19-21 21-15 |
Indonesia Masters - Men's Doubles from 22 January to 27 January 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by | M. Gideon - K. Sukamuljo | 21-14 19-21 21-15 |
Indonesia Masters - Mixed Doubles from 22 January to 27 January 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | R. Ronald - D. Susanto | 21-15 21-13 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by |  Y. Watanabe - A. Higashino | 21-14 21-19 |
European Mixed Team Championships - Group 2 , 13 February 2019 |
|---|
| Group 2 | M. Lamsfuss - J. Völker | defeat |  J. Magee - P. Reynolds | 21-9 21-12 |
| Group 2 | M. Lamsfuss - M. Seidel | defeat |  M. Ellis - C. Langridge | 21-18 21-10 |
| Group 2 | M. Lamsfuss - M. Seidel | defeated by |  V. Ivanov - I. Sozonov | 21-13 13-21 27-25 |
European Mixed Team Championships - Final Round from 13 February to 17 February 2019 |
|---|
| Semi-Finals | I. Herttrich-Lohau - M. Lamsfuss | defeat | E. Malkova-Bolotova - V. Ivanov | 22-20 21-10 |
| Semi-Finals | M. Lamsfuss - M. Seidel | defeat | V. Ivanov - I. Sozonov | 21-14 21-19 |
| Final | I. Herttrich-Lohau - M. Lamsfuss | defeated by |  M. Christiansen - C. Pedersen | 21-12 21-12 |
Spain Masters - Men's Doubles from 19 February to 24 February 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat | M. Bay-Smidt - L. Mølhede | w.o. |
| Round of 16 | M. Lamsfuss - M. Seidel | defeat | M. Kolding - N. Nohr | 21-15 12-21 21-16 |
| Quarter-Finals | M. Lamsfuss - M. Seidel | defeated by |  C. Lu - P. Yang | 17-21 21-18 21-17 |
Spain Masters - Mixed Doubles from 19 February to 24 February 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeated by |  S. Choi - S. Kim | 21-16 13-21 21-19 |
German Open - Men's Doubles from 26 February to 3 March 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat |  M. Bochat - A. Cwalina | 21-15 21-15 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeated by | Y. Ong - E. Teo | 21-12 23-21 |
German Open - Mixed Doubles from 26 February to 3 March 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | D. Puavaranukroh - S. Taerattanachai | 21-14 22-20 |
All England - Men's Doubles from 3 March to 10 March 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat |  J. Maas - R. Tabeling | 21-17 21-12 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeat |  J. He - Q. Tan | 22-20 21-14 |
| Quarter-Finals | M. Lamsfuss - M. Seidel | defeated by | M. Ahsan - H. Setiawan | 21-12 21-13 |
All England - Mixed Doubles from 3 March to 10 March 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | R. Rivaldy - P. Mentari | 22-24 23-21 21-17 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | P. Jordan - M. Oktavianti | 21-11 21-17 |
Swiss Open - Men's Doubles from 12 March to 17 March 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat |  A. M.R. - R. Shlok | 21-18 22-20 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeated by | M. Ahsan - H. Setiawan | 16-21 21-19 21-17 |
Swiss Open - Mixed Doubles from 12 March to 17 March 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | C. Wang - C. Cheng | 21-17 21-12 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeat | Y. Lee - C. Yang | 21-11 21-16 |
| Quarter-Finals | M. Lamsfuss - I. Herttrich-Lohau | defeated by | C. Lu - C. Lee | 21-18 22-20 |
New Zealand Open - Men's Doubles from 30 April to 5 May 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by | V. Goh - W. Tan | 21-15 21-19 |
New Zealand Open - Mixed Doubles from 30 April to 5 May 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat |  S. Leung - G. Somerville | 21-19 21-8 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeat | K. Gondo - A. Kurihara | 21-8 19-21 21-14 |
| Quarter-Finals | M. Lamsfuss - I. Herttrich-Lohau | defeated by | C. Wang - C. Cheng | 21-19 20-22 21-17 |
European Games - Mixed Doubles from 24 June to 30 June 2019 |
|---|
| Quarter-Finals | M. Lamsfuss - I. Herttrich-Lohau | defeated by | M. Ellis - L. Smith | 24-22 21-11 |
Men's European Games - Doubles from 24 June to 30 June 2019 |
|---|
| Quarter-Finals | M. Lamsfuss - M. Seidel | defeated by | J. Maas - R. Tabeling | 16-21 21-17 21-18 |
US Open - Men's Doubles from 9 July to 14 July 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by | K. Chang - C. Lu | 12-21 21-17 24-22 |
US Open - Mixed Doubles from 9 July to 14 July 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat |  M. Fogarty - I. Zhong | 21-9 21-7 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | S. Ko - H. Eom | 21-13 21-15 |
Indonesian Open - Men's Doubles from 16 July to 21 July 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat | B. Issara - M. Jongjit | 10-21 21-13 27-25 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeated by | M. Ahsan - H. Setiawan | 21-16 21-17 |
Indonesian Open - Mixed Doubles from 16 July to 21 July 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | P. Jordan - M. Oktavianti | 22-20 21-14 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | M. Ellis - L. Smith | 21-18 21-18 |
Japan Open - Men's Doubles from 23 July to 28 July 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by | M. Ahsan - H. Setiawan | 21-16 21-17 |
Japan Open - Mixed Doubles from 23 July to 28 July 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | K. Tan - P. Lai | 21-18 23-21 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeat | R. Tabeling - S. Piek | 26-24 27-29 21-16 |
| Quarter-Finals | M. Lamsfuss - I. Herttrich-Lohau | defeated by | Y. Wang - D. Huang | 21-10 21-18 |
Thailand Open - Men's Doubles from 30 July to 4 August 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by | C. Han - H. Zhou | 16-21 21-8 21-19 |
Thailand Open - Mixed Doubles from 30 July to 4 August 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | R. Rivaldy - P. Mentari | 21-11 14-21 21-14 |
Men's World Championships - Doubles from 19 August to 25 August 2019 |
|---|
| Round of 64 | M. Lamsfuss - M. Seidel | defeat |  D. Chrisnanta - K. Loh | 23-21 11-21 21-19 |
| Round of 32 | M. Lamsfuss - M. Seidel | defeat | H. Endo - Y. Watanabe | 21-17 20-22 21-19 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeated by | C. Liu - N. Zhang | 21-18 21-17 |
World Championships - Mixed Doubles from 19 August to 25 August 2019 |
|---|
| Round of 64 | M. Lamsfuss - I. Herttrich-Lohau | defeat |  O. Schaller - C. Burkart | 21-15 21-17 |
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | S. Zheng - Y. Huang | 21-10 17-21 21-11 |
Vietnam Open - Men's Doubles from 10 September to 15 September 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat | K. Chang - C. Lu | 21-16 19-21 21-10 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeated by | S. Na - C. Wang | 21-19 16-21 21-18 |
Vietnam Open - Mixed Doubles from 10 September to 15 September 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | C. Lu - C. Yang | 21-13 16-21 21-11 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | R. Suwardi - P. Bernadeth | 21-23 23-21 21-16 |
China Open - Men's Doubles from 17 September to 22 September 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by | T. Inoue - Y. Kaneko | 21-17 21-19 |
China Open - Mixed Doubles from 17 September to 22 September 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | P. Chopra - N. Reddy | 21-12 23-21 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | D. Puavaranukroh - S. Taerattanachai | 19-21 21-10 21-11 |
Dutch Open - Men's Doubles from 8 October to 13 October 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat | B. Geiss - J. Völker | 21-14 21-15 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeat | M. Bay-Smidt - L. Mølhede | 21-11 21-17 |
| Quarter-Finals | M. Lamsfuss - M. Seidel | defeat | J. Maas - R. Tabeling | 21-11 21-7 |
| Semi-Finals | M. Lamsfuss - M. Seidel | defeat | X. Ou - N. Zhang | 21-23 21-12 21-18 |
| Final | M. Lamsfuss - M. Seidel | defeated by | V. Ivanov - I. Sozonov | 21-19 21-16 |
Dutch Open - Mixed Doubles from 8 October to 13 October 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | E. Dremin - E. Dimova | 21-9 21-9 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | M. Christiansen - A. Bøje | 10-21 21-19 21-18 |
Denmark Open - Men's Doubles from 15 October to 20 October 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat | T. Inoue - Y. Kaneko | 21-19 21-18 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeated by | H. Endo - Y. Watanabe | 19-21 22-20 21-11 |
Denmark Open - Mixed Doubles from 15 October to 20 October 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | N. Phuangphuapet - S. Amitrapai | 21-11 21-19 |
French Open - Men's Doubles from 22 October to 27 October 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by | C. Han - H. Zhou | 21-17 18-21 21-16 |
French Open - Mixed Doubles from 22 October to 27 October 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat | M. Ellis - L. Smith | 21-17 21-15 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | T. Hoki - W. Nagahara | 21-18 21-16 |
SaarLorLux Open - Men's Doubles from 29 October to 3 November 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by |  F. Delrue - K. Lovang | w.o. |
SaarLorLux Open - Mixed Doubles from 29 October to 3 November 2019 |
|---|
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | P. Scheiel - F. Volkmann | w.o. |
Fuzhou China Open - Men's Doubles from 5 November to 10 November 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat | J. Lee - P. Yang | 21-19 25-27 21-15 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeat | C. Han - H. Zhou | 21-17 21-18 |
| Quarter-Finals | M. Lamsfuss - M. Seidel | defeated by | M. Gideon - K. Sukamuljo | 21-14 21-19 |
Fuzhou China Open - Mixed Doubles from 5 November to 10 November 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | Y. Watanabe - A. Higashino | 21-13 21-9 |
Hong Kong Open - Men's Doubles from 12 November to 17 November 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeated by | K. Astrup - A. Rasmussen | 21-14 19-21 21-12 |
Hong Kong Open - Mixed Doubles from 12 November to 17 November 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeated by | S. Seo - Y. Chae | 9-21 21-14 21-14 |
Syed Modi International - Men's Doubles from 26 November to 1 December 2019 |
|---|
| Round of 32 | M. Lamsfuss - M. Seidel | defeat | A. M.R. - D. Kapila | 17-21 21-12 21-19 |
| Round of 16 | M. Lamsfuss - M. Seidel | defeat | S. Na - C. Wang | 17-21 21-16 21-15 |
| Quarter-Finals | M. Lamsfuss - M. Seidel | defeated by | Z. Di - C. Wang | 21-19 24-22 |
Syed Modi International - Mixed Doubles from 26 November to 1 December 2019 |
|---|
| Round of 32 | M. Lamsfuss - I. Herttrich-Lohau | defeat |  C. Law - N. Yeung | 21-13 21-17 |
| Round of 16 | M. Lamsfuss - I. Herttrich-Lohau | defeat | T. Chang - W. Ng | 21-16 21-16 |
| Quarter-Finals | M. Lamsfuss - I. Herttrich-Lohau | defeat | S. Jomkoh - S. Paewsampran | 21-16 18-21 21-12 |
| Semi-Finals | M. Lamsfuss - I. Herttrich-Lohau | defeated by | M. Ellis - L. Smith | 23-21 21-13 |
D. Nikolov - 
A. Dunn
A. Dong
O. Leydon-Davis
A. Kaisti
A. Jones
E. Sonmez
J. Monroy
T. Flaatten
J. Van Nieuwkerke
R. Eidestedt
M. Szturma
J. Bitman
1st