Zharnel Hughes again missed out on Commonwealth Games gold – as Keely Hodgkinson and Jake Wightman suffered disappointment in Birmingham.
European champion Hughes clocked 20.12 seconds in the 200 metres final at the Alexander Stadium on Saturday night but finished behind reigning champion Jereem Richards.
The Trinidad and Tobago star ran a Games record of 19.80 secs.
He was ruled to have impeded Richards before they crossed the line and had an appeal thrown out, having already done a victory lap, with Richards handed the title.
Meanwhile, Hodgkinson targeted a golden finale to her season after being beaten.
She could only take silver in the 800m as Kenya’s Mary Moraa upset the favourite to claim victory.
The Kenyan finished third behind Hodgkinson when the Briton also took silver at the World Championships last month.
Scotland’s Laura Muir clinched bronze as Moraa’s run – which saw her lead the first lap before falling to last with 300m to go and then storm back – stunned the Alexander Stadium.
“I’m definitely determined to win a gold, three more warm-ups and cool-downs to do and the season is almost finished,” she said.
“I really wanted the gold, worlds was definitely the hardest and I thought I was going to win today but I guess it wasn’t meant to be.
“Mary went off quite hard and there was a bit of argy-bargy in the corner so I needed to keep my position. I don’t really know what Mary was doing, to be honest. I was focusing on myself.
Moraa, who won in one minute 57.07 seconds, admitted she went off too quickly and almost gave up on a medal.
“My plan was to go through quite fast in 57 or 58 seconds but after 300m I realised I was going too fast as I was running at 56-second pace,” she said.
“I lost hope because everyone went past me. I was last. But when I got to 200m I started to close the gap and with 120m to go I was counting 1-2-3-4 and I started to think I could win a medal. I kept pushing.”
“I was so determined, doing the double, that I was not going to waste running the 800 and not getting a medal.”
Earlier, world champion Wightman admits he did “as good as I could have” as his hopes of a stunning summer hat-trick ended after coming third in the 1500m.
He was hoping to continue his unique treble quest – after July’s World Championships victory – but must now refocus for the 800m at the European Championships.
“That was as good as I could have done,” said Wightman, who ran 3:30.53.
“I didn’t want to be a pedestrian and be running for minor medals. I wanted to make a statement but I didn’t feel anywhere near as good as I did a couple of weeks ago.”
Wightman senior was again the announcer at the Alexander Stadium and watched as his son made a move with around 300m to go – but he was overhauled.
England’s men’s 4x100m relay squad of Jona Efoloko, Harry Aikines-Aryeetey, Nethaneel Mitchell-Blake and Ojie Edoburun won their heat in 38.48secs to reach Sunday’s final.
Asha Philip, Imani-Lara Lansiquot, Bianca Williams and Ashleigh Nelson progressed to the women’s final by finishing second in their heat in 42.72secs.