World Championships 08/21 13:00 6 Wan Ho Son v Kalle Koljonen L 2-0
Indonesia Masters XD 04/26 18:30 5 Kalle Koljonen v Hans-Kristian Vittinghus L 0-2
Indonesia Masters XD 04/25 11:00 6 Nick Fransman v Kalle Koljonen W 1-2
Giraldilla Int. XD 04/23 12:04 - Anand Pawar v Kalle Koljonen L 2-1
Giraldilla Int. XD 04/22 14:53 - Sam Parsons v Kalle Koljonen W 1-2
Giraldilla Int. XD 04/22 11:04 - Erik Meijs v Kalle Koljonen W 0-2
Giraldilla Int. XD 04/08 08:00 1 Kalle Koljonen v Kim Bruun L 1-2
Giraldilla Int. XD 04/07 15:00 1 Thomas Rouxel v Kalle Koljonen W 0-2
Giraldilla Int. XD 03/31 13:10 1 Kalle Koljonen v Spencer Newman L 1-2
All England Open 03/14 19:20 6 Kalle Koljonen v Anders Antonsen L 1-2
All England Open 03/01 18:30 1 Kalle Koljonen v West Indies Women L 0-2
All England Open 02/28 19:00 6 Kai Schaefer v Kalle Koljonen W 1-2
Indonesia Masters XD 02/23 14:37 - Pablo Abian v Kalle Koljonen L 2-0
Giraldilla Int. XD 01/20 11:36 - Kalle Koljonen v Mikael Westerback W 2-1
Indonesia Masters XD 12/15 08:49 - Rasmus Gemke v Kalle Koljonen L 2-0
All England Open 11/01 15:40 6 Giap Chin Goh v Kalle Koljonen L 2-0
Dutch Open 10/12 10:00 6 Milan Ludik v Kalle Koljonen L 2-0

Wikipedia - Kalle Koljonen

Kalle Koljonen (born 26 February 1994) is a Finnish badminton player. In 2014, he won a bronze medal at the European Men's Team Championships in Basel. He won his first international title at the 2015 Hungarian International. Koljonen became first ever badminton player from his country to medal at the European Championships in 2021.

He competed for Finland at the 2024 Summer Olympics in the men's singles event.