His sudden death at 24 has shone a light on what a talent and hard worker he was, and what he represented.
With three world records to her name, Faith Kipyegon is competing for two gold medals at the World Athletics Championships.
The decline in Kenyan medals at the world championships is due to increased competition and a lack of investment at home.
The controversy over female athletes being tested for testosterone levels is not just a contested scientific issue but also one of human rights.