"FINAL INSULT ... WHAT A DOPE."

Mail on Sunday tweets its backpage headline expressing disapproval of two-time doping cheat Gatlin's win

"Leaves a sour taste in the mouth but #Bolt won't be remembered for tonight. Total game changer.#legend."

Michael Owen, former England soccer star @themichaelowen

"No one saw that happening no one wanted that to happen #Gatlin."

Kelly Sotherton, retired British heptathlete @KellySotherton

"Imagine becoming world champion only to have the fans boo you and chant the name of the guy in 3rd place. London fans are savage."

Dai Greene, British hurdler @Dai-Greene

"The cheat!!!! Nooooooooo....."

Brian O'Driscoll, former Ireland rugby union captain @BrianODriscoll

"I was so excited for this race and as a sports fan I feel robbed. Couldnt have been a worse result. Can deal with Bolt losing but not to a cheat #thedarksideofsport."

Karen Pickering, former British swimmer-turned-TV pundit @Karen_Pickering

"Didn't agree with booing of @justingatlin at #IAAFWorlds but no denying this result is disaster for sport."

Duncan Mackay, veteran athletics correspondent @Duncan_ITG

"Over an hour after the 100m, Usain Bolt is still responding to fans and their chants of "Usain Bolt, Usain Bolt" before doing more media."

Athletics Weekly, @AthleticsWeekly

"What a moment to be there live for @usainbolt's last 100m race. A great man on and off the track, who has inspired many. What a legend!"

David Haye, Britain's former world heavyweight boxing champion @mrdavidhaye