Usain Bolt delivered Justin Gatlin a second knockout blow in
five days to win his fourth straight 200 metres world title
and prove that when it comes to major championship sprinting,
he simply has no peer.
David Rudisha strained every sinew to win gold, Genzebe
Dibaba dominated in the way the Kenyan once did and Usain
Bolt's second sprint showdown with Justin Gatlin moved a step
closer at the world athletics championships in China.