Faith Kipyegon underlined her credentials as the best middle-distance runner of all time in Tokyo on Tuesday while also having more than succeeded in showing female athletes that having a child can be the springboard to relaunch their careers.

Kipyegon's fourth world title at 1,500 meters further cemented her grip on the event on the global stage, with the 31-year-old having also won gold at the last three last Olympics.

The Kenyan is fairly unusual on the elite circuit in being a mother, having given birth to her daughter, Alyn, in June 2018.