Sprinter Nethaneel Mitchell-Blake won the 200m at the British Athletics Team Trials and set a new British record in the process.
Mitchell-Blake stormed home in a time of 20.18 to eclipse John Regis’ Championship Best Performance set 30 years ago and reach the qualifying time for the World Athletics Championship next month.
Danny Talbot came second to reach the qualifying time for London, but Rio Olympic finalist Adam Gemili may miss out after he finished sixth.
Third-placed Leon Reid also ran the qualifying time but Zharnel Hughes, who was fourth, is likely to be Gemili's main competition for a place on the British team at the Worlds.
But the day belonged to Mitchell-Blake after his excellent run.
He said: "This is the first time I’ve run in front of my home crowd and the experience is second to none,"
"I am so pleased I have the opportunity to do it again in London. It was a great field, it was the last event (on the programme at the Team Trials) for a reason, as everybody stepped up and hopefully we can do the country proud now in London."
Asked if he was confident going into the World Championships, he said: "Why would I not be? I have an opportunity to showcase my talent in front of London and the world. I am going for it."
He added: "My plan now is to recover and sit down with my coach (Dennis Shaver) to decide what is best between now and London. The aim is to get ready for August."
In the women’s 200m 20-year-old Shannon Hylton held off both Bianca Williams and Desiree Henry to win in 22.94.
"I had so many emotions when I crossed the line," Hylton told BBC Sport. "It was such hard work this year, but I can't believe I'm going to London now."
In the women's 1500m, contested in the absence of Scotland's Laura Muir - who has already qualified via her Diamond League series victory in 2016, Laura Weightman took the title in four minutes 6.50 seconds.
Elsewhere, Chris O'Hare emerged victorious in the men's 800m as Josh Kerr beat Jake Wightman in a photo finish for second. Charlie Grice, the champion for the past three years, finished down in fifth and is in serious risk of missing out on London.
Eilidh Doyle won her fourth British title in the women's 400m hurdles as she finished well inside the qualifying time at 55.59secs.
While Matthew Hudson-Smith backed up his place at the top of the season's domestic 400m standings with a comprehensive victory.
Sportsbeat 2017