Brazil Int. 05/02 12:00 - Kai Schaefer v Krausz, Gergely W 2-0
Orléans Masters 03/21 17:00 4 Kai Schaefer v Mark Caljouw L 0-2
Orléans Masters 03/20 08:40 5 Kai Schaefer v Soo, Teck Zhi W 2-0
Orléans Masters 03/19 18:00 6 Parsons, Sam v Kai Schaefer W 0-2
Open de Suisse - Doubles Femmes - Qualif. 03/12 11:00 - Kai Schaefer v Burestedt, Felix L 1-2
Masters d'Espagne 02/20 15:20 5 Pablo Abian v Kai Schaefer L 2-0
Open de Suisse - Doubles Femmes - Qualif. 02/19 13:55 - Kim Bruun v Kai Schaefer W 1-2
Open de Suisse - Doubles Femmes - Qualif. 02/19 11:00 - Kai Schaefer v Amaya, Bernat W 2-0
Giraldilla Int. XD 02/16 10:30 - Kai Schaefer v Malkov, Vladimir L 1-2
Giraldilla Int. XD 02/15 13:30 - Ouseph, Rajiv v Kai Schaefer W 0-2
Giraldilla Int. XD 11/30 11:45 1 Lane, Alex v Kai Schaefer L 2-0
Giraldilla Int. XD 11/29 13:30 1 Joran Kweekel v Kai Schaefer W 1-2
Giraldilla Int. XD 11/23 11:20 4 Mark Caljouw v Kai Schaefer L 2-0
Giraldilla Int. XD 11/22 13:20 5 Christo Popov v Kai Schaefer W 1-2
Giraldilla Int. XD 11/21 18:00 6 Magee, Joshua v Kai Schaefer W 1-2
Giraldilla Int. XD 10/31 16:20 5 Kai Schaefer v Mark Caljouw L 0-2
Giraldilla Int. XD 10/30 18:45 6 Kramer, David v Kai Schaefer W 0-2
Giraldilla Int. XD 09/28 08:30 1 Kai Schaefer v Subhankar Dey L 1-2
Giraldilla Int. XD 09/23 14:00 1 Dani, Harsheel v Kai Schaefer W 1-2
Giraldilla Int. XD 09/23 09:20 1 Heino, Iikka v Kai Schaefer W 0-2
Giraldilla Int. XD 09/22 12:00 1 Messerschmidt, Rasmus v Kai Schaefer W 0-2
Giraldilla Int. XD 08/29 12:50 5 Igarashi, Yu v Kai Schaefer L 2-0
Open d'Angleterre 07/31 09:40 6 Kai Schaefer v Hans-Kristian Vittinghus L 1-2
Open de Suisse - Doubles Femmes - Qualif. 07/17 00:55 - Kai Schaefer v Kholik, Firman Abdul L 1-2
Giraldilla Int. XD 06/20 19:40 5 Thammasin, S. v Kai Schaefer L 2-0
Giraldilla Int. XD 06/20 01:00 6 Kevin Cordon v Kai Schaefer W 0-2
Giraldilla Int. XD 06/13 23:40 5 Xiaodong Sheng v Kai Schaefer L 2-1
Indonesia Masters XD 05/23 03:00 1 Wong, Wing Ki Vincent v Kai Schaefer L 2-1
Indonesia Masters XD 05/22 03:00 1 Kenta Nishimoto v Kai Schaefer L 2-1
Indonesia Masters XD 05/20 12:00 1 Tien Chen Chou v Kai Schaefer L 2-0

Wikipedia - Kai Schäfer

Kai Hendrik Schäfer (born 13 June 1993) is a German badminton player. He competed at the 2020 Tokyo Olympics.