Great Britain team captain Lorraine Ugen showed the way with a thumping long jump victory in the inaugural Athletics World Cup at the Olympic Stadium.
Britain’s ladies led the charge as Ugen, Sophie Hitchon, Holly Bradshaw and Meghan Beesley all medalled at the London event – where podiums count for points.
Ugen – who holds the world lead – continued the fine form that led to her Diamond League victory in Stockholm.
A 6.86m jump handed the 26-year-old victory by a margin of 38cm, earning a maximum eight points for the hosts.
Ugen said: “I wanted to lead by example as captain and get points for the team.
“I feel like I’m on a roll right now. It was great in the stadium, the crowd was loud and it was a nice turnout.
“I’m just going to keep going out and putting big jumps out there, hopefully I can pull another big one out of the bag at the European Championships.”
The home team are fifth in the overall standings, trailing USA, France, Poland and Jamaica ahead of Sunday’s repeat performance at the Queen Elizabeth Olympic Park.
Britain got on the board after Bradshaw blew the field away in the pole vault, clipping the bar with a 4.75-metre leap but outlasting her seven opponents.
The Preston vaulter is on an upward curve heading into August’s European Championships in Berlin, aiming to recreate the form that won her indoor European gold five years ago.
“I started off my season quite slowly, it was always going to be slow off the back of the Commonwealth Games,” said Bradshaw, who finished fourth in Australia.
“I love competing in Britain, whenever I’m in London or Birmingham it’s an amazing atmosphere and it’s great to be back at the Olympic Park."
Elsewhere on the field, hammer thrower Hitchon threw a season’s best of 73.48m at the second attempt; the two foul throws that followed proving immaterial as she secured silver and seven points.
It was a redemptive triumph for the Burnley-born ace, who suffered heartbreak in missing out on the World Championship podium a year ago at the same venue.
“I came away crying last year but I’m not crying now,” said the 27-year-old, beaten to gold by all-conquering Pole Anita Włodarczyk.
“If I hadn’t have fouled I think my last throws would have been better but it’s more than I could have asked for.”
Beesley also won seven points for Britain, backing up her bronze medal at the British Championships in Birmingham earlier this month with silver in the 400 metres hurdles.
Scot Jemma Reekie, 20, had a night to remember in her first-ever senior outing for Britain, a time of 4:09.05 earning her bronze in the 1500m, before Elliot Giles did the same in the 800m.
Meanwhile, three-time national champion Scott Lincoln advanced his case for Berlin with a season’s best of 19.24m in the shot.