'Final insult', 'sour taste' -- how Twitter reacted to Gatlin beating Bolt

Justin Gatlin shrugged off the boos to stun Usain Bolt in the 100m final at the world championships on Saturday.

Here's how Twitter reacted:

"FINAL INSULT...WHAT A DOPE."

-- Mail on Sunday tweet their sports front page, condemning Gatlin who has served two doping bans.

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

-- Former England football star Michael Owen @themichaelowen

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

-- British athlete Kelly Sotherton @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."

-- Ex-400m runner Dai Greene @DaiGreene

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

-- Former Ireland rugby skipper Brian O'Driscoll @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."

-- Retired British swimmer Karen Pickering, now a TV commentator @Karen_Pickering

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

-- Veteran athletics correspondent Duncan Mackay @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!"

-- British heavyweight boxer David Haye @mrdavidhaye