Defending champions England won 4x100m relay gold as Ojie Edoburun anchored a classy display.
Edoburun, who was called into the squad after Reece Prescod was injured, finished clear of Trinidad and Tobago in 38.35 seconds.
Jona Efoloko, 22, was preferred to Adam Gemili in the opening leg, with Zharnel Hughes and Nethaneel Mitchell-Blake impressing in the middle of the match.
England women took silver back from Nigeria in the women’s edition.
Led by Asha Philip, Imani Lansiquot and Bianca Williams took the baton in the last 100 meters with ground to make up for Nigeria.
Presenter Daryl Neita briefly threatened to roll in Nzubechi Grace Nwokocha as the crowd felt a dramatic comeback but England were derailed.
Nigeria won in 42.10, 0.31s ahead of the hosts.
Efoloko, a former world under-20 200m champion, was also alongside Mitchell-Blake and Hughes when Great Britain won world bronze in Eugene last month.
“I like it more and more. Second time, second medal. It’s a lot of pressure and you want to do well,” he told BBC Sport.
He waited to hug Edoburun at the end of the match as the pair urged the crowd to make even more noise.
“I’m really happy to come in and match up with the boys,” Edoburun said.
“I didn’t want to lose this special generation of athletes and I want to convey this confidence to the Europeans.”
