Six years on from London 2012's infamous Super Saturday, Olympic gold medallist Adam Peaty turned back the clock to break his own 100m breaststroke world record in Glasgow.
The Rio 2016 Olympic champion smashed his personal best time by 0.13 seconds to set a new world record of 57.00s and clinch a ninth European Championship gold medal.
Teammate and two-time Commonwealth Games champion James Wilby made it double delight for Great Britain in the pool by taking silver 1.54s behind the five-time world champion
Track cyclist Ethan Hayter brought down the roof by racing to his first European Championship gold medal with an incredible comeback ride in the Omnium.
Great Britain now sit third in the medal table at the inaugural mixed-event European Championships.
Teenage Hayter wins cycling gold
Every one of Ethan Hayter's friends and family will know exactly where they were on the day he became European omniun champion.
Unfortunately for the 19-year-old, his mum will remember not being in Glasgow's Sir Chris Hoy Velodrome - instead she was on holiday.
The teenager delivered a performance far beyond his years in the multi-format race, rising from fifth to first after the concluding points race to claim the European crown.
It's a moment remarkable enough for Hayter - even before he admitted messing up the event's opening scratch race.
But after three races he still had 94 points to his name, putting in the points race of his life to overcome the six-point deficit and lead out second placed Elia Viviani by 20 points.
"I didn't quite make it at the Commonwealths so it's great to win," he said. "I've had a bit of a breakthrough year this year.
"The main goal is to get to Tokyo - and the toughest thing there will be getting in the team - but if I get in I'll just try to win as many golds as possible.
"My mum normally comes but they've gone on holiday, so I've done better being on my own."
Hayter's gold rounded out another successful evening of British cycling, with Katie Archibald winning silver in the individual pursuit.
The Rio 2016 Olympic champion had already guaranteed herself a medal after qualifying second fastest in the morning session.
But Lisa Brennauer proved too quick for the Scot, stopping the clock in 3:26.879.
Successive silvers for GB rowers
Britain’s first medals of the day came on the water at Strathclyde Country Park with double silver medal success for the men’s four and women’s eight.
The quartet of James Johnston, Adam Neill, Jacob Dawson and Tom Ford powered into second place to hold off France in third and finish closely behind the Romanian gold medallists.
Olympic medallist Karen Bennett continued her preparations for the World Rowing Championships in some style as she helped the women’s eight clinch silver in Glasgow.
Bennett is the only survivor of the crew that stood second on the podium in Rio two years ago but a second-placed finish at Strathclyde Country will give the newly formed team plenty of confidence heading to the World Championships in Bulgaria next month.
Elsewhere, fellow Olympic medallist Zoe Lee was unable to inspire the women’s quadruple sculls onto the podium, finishing in fourth place in a time of 6:26.03.
Adam Peaty reminded everyone of his brilliant talent at Tollcross International Swimming Centre with a new world record in the men’s 100m breaststroke.
The Olympic champion blasted to his ninth European gold, winning in 57.00s – just 0.01s away from becoming the first man in history to go under 57s.
“I was not going out there to break a world record, but I got out there and thought it was so easy down the first 50m,” he said.
“When I came back, all the passion and emotion and disappointment of the Commonwealths fuelled me down that last 50.
That marked Great Britain’s first gold in the pool and they followed it up with another medal shortly after with Steven Milne, Craig McLean, Kathryn Greenslade and Freya Anderson picking up bronze in the 4x200m freestyle mixed relay.
On Sunday, Georgia Davies is favourite for gold in the women’s 50m backstroke after she set a new championship record in her Saturday morning heat and then qualified fastest again in the semi-finals.
Elsewhere, Olympic silver medallist Siobhan-Marie O’Connor booked her place in the final of the 100m breaststroke with an impressive first place finish in qualifying.
Fellow Olympic silver medallist James Guy is also into the finals – finishing second in the 200m butterfly semi-finals.
Comeback gymnastic queens
Britain narrowly missed out on a medal after a sterling comeback from sixth place to fourth in the women’s artistic gymnastics team event final.
The line-up featuring 15-year-old Commonwealth silver medallist Taeja James, Lucy Stanhope, and Commonwealth gold medallists Alice Kinsella, Kelly Simm and Georgia-Mae Fenton finished with a score of 157.263 – 2.3 points behind Netherlands in bronze.