Justin Gatlin and the United States roared to victory in the men's 4x100m relay as rivals Canada and Jamaica dropped batons at the IAAF World Relays in the Bahamas on Saturday.
Run down by Canadian Olympic medalist Andre De Grasse in the earlier heats, Gatlin romped home in the final, leading the U.S. team of Leshon Collins, Mike Rodgers and Ronnie Baker to victory in 38.43 seconds.
"It's all about execution, not about superior speed," the 35-year old Olympic 100 meters silver medalist told reporters.
"Britain and Canada didn't get the stick off (in the final) so I am running with 20 meters to the finish line wondering 'Hey, where is everybody at."
Barbados claimed the silver and China surprised by taking the bronze.
Australia finished fourth ahead of France as both joined the medalists in qualifying for the IAAF world championships in August.
DeGrasse, who many have labeled as retiring Jamaican record holder Usain Bolt's likely successor, never had a chance to replicate his first-round showing.