King's Kung-Fu& Tai Chi

Ko Janssens

Olympic boxer

Born
20 December 1889, Rotterdam
Died
21 August 1970
Citizenship
Kingdom of the Netherlands
Sport
boxing
Discipline
lightweight
Occupation
boxer

Jacobus Cornelius "Ko" Janssens (20 December 1889, Rotterdam - 21 August 1970, Epe) was a Dutch boxer who competed in the 1920 Summer Olympics. In 1920 he was eliminated in the first round of the lightweight class after losing his fight to Frank Cassidy.

Competitions

CompetitionYearResult
1920 Summer Olympics1920

External links

Facts from Wikidata Q6424134 (CC0); quoted introduction from English Wikipedia (CC BY-SA 4.0). Data retrieved 2026-10-22.

Data: Wikidata (CC0 1.0); Wikipedia (English) (CC BY-SA 4.0). Retrieved 2026-10-22.

Last posts

  1. How to Stop Escrima Sticks Slipping with Sweaty Hands
  2. Choosing Soft Sticks for Kids Games and Safe Play
  3. Best Padded Sticks for Self-Defense Training and Safety
  4. Best Lightweight Escrima Sticks for Speed and Quick Strikes
  5. Mixing Stick Lengths in Crafting and Construction
  6. Do Carved-Grip Escrima Sticks Improve Weapon Retention
  7. Best Short Sticks for Close-Range Drills and Training
  8. Best Escrima Books for Beginners and Clear Technique
  9. Are Aluminum Trainer Knives Safe for Beginners
  10. Best Rubber Training Knives for Kali Practice