The United States' Christian Coleman screams in celebration after winning the 100m at the IAAF World Championships in Doha ©Getty Images

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A spectacular light show had given a theatrical flourish to the race before it started ©Getty Images
A spectacular light show had given a theatrical flourish to the race before it started ©Getty Images
But when it started there was no unexpected twist as Coleman won easily ©Getty Images
But when it started there was no unexpected twist as Coleman won easily ©Getty Images
The mixed 4x400m relay made its debut at the IAAF World Championships with the semi-finals ©Getty Images
The mixed 4x400m relay made its debut at the IAAF World Championships with the semi-finals ©Getty Images
The Americans set a world record in the new event ©Getty Images
The Americans set a world record in the new event ©Getty Images
Tajay Gayle of Jamaica surpassed expectations and won the long jump with the best performance for 10 years ©Getty Images
Tajay Gayle of Jamaica surpassed expectations and won the long jump with the best performance for 10 years ©Getty Images
The women's 10,000m took place ©Getty Images
The women's 10,000m took place ©Getty Images
The Netherlands' Sifan Hassan won comfortably and afterwards embraced with the silver medallist, Ethopia's Letesenbet Gidey, as photographers captured the moment ©Getty Images
The Netherlands' Sifan Hassan won comfortably and afterwards embraced with the silver medallist, Ethopia's Letesenbet Gidey, as photographers captured the moment ©Getty Images
America's Deanna Price won the women's hammer throw ©Getty Images
America's Deanna Price won the women's hammer throw ©Getty Images
The winners of the women's marathon, which had finished in the middle of the night earlier, received their medals ©Getty Images
The winners of the women's marathon, which had finished in the middle of the night earlier, received their medals ©Getty Images