Matthew Hudson-Smith produced a storming final leg to win Commonwealth Games gold for England's men in the 4x400 metres relay.
The 19-year-old, competing at his first senior major championship, picked up the baton in second, but passed Trinidad and Tobago's Zwede Hewitt with 200m to go and, just when it seemed he had saved nothing for the finish, managed to hold off Chris Brown of the Bahamas to take the title.
The quartet, which also featured Conrad Williams, Michael Bingham and Daniel Awde, came home in three minutes 00.46 seconds to win by 0.05secs at a drenched Hampden Park.
The England quartet were missing Martyn Rooney, who finished fourth in the individual, but his absence was not felt.
Hudson-Smith's performance continues his meteoric rise from complete unknown to world-class one-lap runner.
He came into 2014 with a personal best from indoors of 48.76secs, having been predominantly a 200m sprinter, but has stepped up in distance and he proceeded to batter that time into oblivion.
His PB went down to 45.80s in May and then to 44.97 at this very stadium last month.
In between times he was disqualified at the British Championships, but he has bounced back in some style.
His split on Saturday night was timed at 44.56.
Hudson-Smith told BBC Sport: "I am lost for words. That was crazy. One minute I'm under-20s, then I'm seniors at the Commonwealths and I've got the Europeans (in Zurich next month) next."
Awde added: "When I saw this guy (Hudson-Smith) running like a deer I knew he had it all the way."
Earlier, 40-year-old mother of two Jo Pavey denied Kenya a clean sweep in the 5,000m by producing a hugely gutsy run to take a "comical" bronze medal.
Pavey, whose daughter Emily was born last year, produced one final burst down the home straight to pass Margaret Muriuki and was only edged out of silver by six hundredths of a second.
The Devon athlete, who won silver at the Melbourne Commonwealths eight years ago, led through the last three laps, but looked like she had been dropped with 200 metres to go.
Yet on a track sodden from heavy rain she kicked brilliantly to shock Muriuki and come within a whisker of chasing down Janet Kisa, 19 years her junior, before crossing the line in 15:08.96.
Mercy Cherono claimed the gold.
Pavey competed at her first senior major championships in 1997 at the World Championships in Athens. Kisa was just four at the time.
Pavey said: "I think it feels almost comical to me, I'm 40 now, I've got two kids and the youngest is only 10 months. so to be out there trying to race against the Kenyans and getting a medal seems almost like I'm dreaming.
Pavey's four-year-old son Jacob was in the stadium watching and she added: "It's just so great, I was able to give my husband, my little boy and my mum a hug. My little girl's at home with my mother-in-law. She's only 10 months and I was worried she would be terrified.
"I tried not to think the Kenyans were unbeatable, just give it my all and as I hit the bell think, 'Don't regret this last lap'. When I hit the home straight I just gave it my all and I can't believe I got a medal.
"This medal seems almost funny, I haven't been able to go on any training camps, I was still breastfeeding at the start of April. Being a mum is my main thing now, to be out there getting a medal seems funny. When I was younger everything was focused around running, now I am changing nappies, preparing meals and I don't get a minute to relax."
Wales' Sally Peake took silver in the pole vault, which was won by Australian Alana Boyd, the competition verging on the farcical because of the heavy rain. Six of the 10 competitors failed to clear a height.
Peake's clearance of 4.25m was enough for silver, with England's Sally Scott taking a share of bronze thanks to a clearance of 3.80m.
There was bronze for England's women in the 4x100m as the quartet of Asha Philip, Bianca Williams, Jodie Williams, Ashleigh Nelson came home in 43.10, behind winners Jamaica and Nigeria.
The 4x400m women - the team was made up of Christine Ohuruogu, Shana Cox, Kelly Massey, Anyika Onuora - also took third place behind the same two countries.
And there was a Kenyan gold in the javelin, Julius Yego winning with a throw of 83.87m.
There was disappointment for Phillips Idowu in the triple jump in his first major championship since the London Olympics as he produced five no-jumps out of six attempts and had to settle for fifth place.