Great Britain won the gold medal with the third-fastest time in history.
Bolt insisted this would be the final individual race of his storied career - his swan song. He told ESPN, he wasn't "comfortable in the starting blocks". It is the good news story they crave. Delightfully, there are now two last spins for the road.
All the action from the men's 4 x 400 m relay will take place on August 12, Saturday. We need to believe everything we see when we watch sport is clean and real, otherwise what is the point.
The fastest qualifiers are always awarded the more preferable middle lanes.
But then all the records are his.
I'm not for one second arguing against the Russian ban, after the discovery of damning evidence that drug use in athletics in Russia is literally state sponsored.
Since he first ran the blue riband shorter event in 2007, he has run 54 100m races, excluding heats, and won all but six. If it goes to criminal courts first and a person serves a prison sentence, that may be for just three or four months. What's more, Gatlin denies him the crutch of old age, which Bolt could have leaned on to justify his retirement and/or rationalize this loss. Many consider the Olympic sprints to be the acme of sporting achievement. Now, as Bolt prepares to leave, there is still no stemming the rot with the Russian doping scandal the latest to hit.
Usain Bolt has anchored the Jamaican 4x100 metre relay team to victory in its heat to set up his farewell race at the World Athletics Championships in London. Life ban? Hardly. He said his trainer gave him a tainted substance.
"I think I almost cried" Bolt said."I was just saying goodbye. That was it. Saying goodbye to my events. Saying goodbye to everything."Reuters
Meanwhile, Bolt continued to give credit to 100m gold medalist Justin Gatlin for his perseverance in a hard atmosphere amongst the fans in London, where they booed the 25-year-old American throughout the sprint competition.
Bolt, who finished third in a time of 9.95, accepted with class both the result, and the fact that, at 30, he probably is picking the flawless time to retire.
There is unlikely to ever be a track star as rich as Bolt, because athletics earnings generally pay so little even to those at the top of their field. With a cocktail of cockiness, swag and showmanship never seen on the world stage of track and field, Bolt became a worldwide legend.
"Between the bikes, loud, horrid music, parties and screams, I honestly wish he would go back to where he came from", his neighbor-model Jodi Stewart-Henriques wrote on Facebook in 2015.
Always a fan favorite, Bolt maintained his Hollywood smile as he jogged around the track following the race, Jamaican flag in tow. "Bask in my glory!", he would have appeared an appalling braggart.
Bolt seems to enjoy his fame and fortune.
And that was, ultimately, his crowning glory. "Off the last hurdle I gave everything and threw myself for a dip just in case". Let's bask in his glory one last time.