Kenyan teenager Phanuel Koech has rapidly emerged as a force in the 1500m, setting a world U20 record and beating seasoned champions ahead of the World Championships in Tokyo.

• Koech ran 3:27.72 in Paris, securing the world U20 record and placing ninth on the senior all-time list.
• He later won the London Wanda Diamond League event in 3:28.82, defeating world champion Josh Kerr.
• Koech, who was inspired by school alumni like David Rudisha and Emmanuel Korir, aims for a medal in Tokyo despite it being a new experience.