"I'm itching to run. I can't wait," Bolt said today, as relaxed and confident as last year when he set three world records on his way to Olympic titles in the 100, 200 and sprint relays in Beijing.
By that time, Gay had seen his season ruined by injury. Now, both men say they are at their peak, convinced the winner will likely run away with a world record as well as a gold medal on Sunday.
"He's already shown the world what he can do, but I haven't shown all my talents yet," Gay said today as both athletes had competing news conferences which highlighted Bolt's showmanship as much as Gay's seriousness.
At the Yaam Beach Club on the Spree river in Berlin, the reggae was blaring, the bamboo bar was moving drinks and Bolt was promising to produce a new dance act if he wins the world title at the Olympic Stadium late Sunday.
As a joke, he had two rubber arms attached to his back already making the iconic bow-and-arrow move when he came into the sweltering body-packed press conference.
"I set a standard for myself. I have to live up to it," he said.