Scottish Open 11/21 15:50 - Kalle Koljonen v Ditlev Jaeger Holm L 1-2
Scottish Open 11/21 09:00 5 Kalle Koljonen v Ethan Rose W 2-0
Irish Open 11/13 12:50 5 Gustav Bjorkler v Kalle Koljonen L 2-0
Hylo Open 11/01 15:35 2 Kalle Koljonen v Magnus Johannesen L 0-2
Hylo Open 10/31 12:45 3 Kalle Koljonen v Ayush Shetty W 2-1
Hylo Open 10/30 17:55 4 Kalle Koljonen v Nhat Nguyen W 2-0
Hylo Open 10/29 20:10 5 Tien Chen Chou v Kalle Koljonen W 1-2
Czech Open 10/17 12:00 - Enrico Baroni v Kalle Koljonen - home
Arctic Open 10/08 14:40 5 Kalle Koljonen v Takuma Obayashi L 0-2
Al Ain Masters 10/03 12:55 3 Kalle Koljonen v Srikanth Kidambi L 1-2
Al Ain Masters 10/02 10:05 4 Alap Mishra v Kalle Koljonen W 0-2
Al Ain Masters 10/01 11:15 5 Rithvik Sanjeevi Satish Kumar v Kalle Koljonen W 0-2
Belgian Int. 09/12 09:10 - Victor Ording Kauffmann v Kalle Koljonen L 2-0
Belgian Int. 09/11 14:50 - Kian-Yu Oei v Kalle Koljonen W 0-2
Belgian Int. 09/11 12:30 - Wei-Cheng Su v Kalle Koljonen W 1-2
World Championships 08/27 08:45 5 Kean Yew Loh v Kalle Koljonen L 2-0
World Championships 08/25 14:00 6 Harry Huang v Kalle Koljonen W 1-2
Canada Open 07/02 19:35 5 Kalle Koljonen v Li Yang Su L 0-2
US Open 06/25 15:40 5 Tien Chen Chou v Kalle Koljonen L 2-0
European Championships 04/10 11:40 4 Kalle Koljonen v Christo Popov L 0-2
European Championships 04/09 09:20 5 Kalle Koljonen v Milan Dratva W 2-0
European Championships 04/08 08:00 6 Kalle Koljonen v Bruno Carvalho W 2-1
Polish Open 03/21 13:55 - Kalle Koljonen v Fabian Roth D Retired
Orleans Masters Qual 03/04 09:50 4 Kalle Koljonen v Joakim Oldorff L 0-2
German Open 02/26 13:00 5 Brian Yang v Kalle Koljonen L 2-1
Euro Mixed Team Champs 12/05 12:00 - Kalle Koljonen v Jan Louda W 2-1
Syed Modi Int. 11/27 14:10 5 Kalle Koljonen v Duc Phat Le L 1-2
Irish Open 11/15 17:00 - Nhat Nguyen v Kalle Koljonen L 2-0
Irish Open 11/15 10:40 - Kalle Koljonen v Daniil Dubovenko W 2-0
Irish Open 11/14 20:20 - Kalle Koljonen v Aria Dinata W 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.