Mo Farah could become Britain's greatest track and field athlete today as he goes for gold in the 5,000m.
Victory in the event in which he is already world champion, seven days after he set the Olympic Stadium alight by winning the 10,000m, would top a golden Games for Team GB.
Usain Bolt will also be looking for his third gold of the Games as the world's fastest man joins Jamaica for the 4x100m relay final.
Golden boy: Farah has already banked a victory in the 10,000m
Britain looks set to boost its best medal haul in more than 100 years as Farah, two boxers and a kayaker aim for the top step of the podium.
Diver Tom Daley survived a major scare as he left it until his final dive last night to nervously progress past the first round of the men's 10m platform.
The 18-year-old former world champion produced one of the worst displays of his decorated young career before narrowly sneaking through to this morning's 18-man semi-final.
Victories in the ring mean two boxers have the chance to go for gold today with Britain guaranteed at least two more silvers.
Luke Campbell, 24, from Hull, will take on his family friend John Joe Nevin, of Ireland, as he bids to fulfil his lifelong ambition of winning an Olympic title.
"It's all about the gold medal for me now," Campbell said.
"But I'm proud of what I've done so far and I'm happy to make my family proud and my little lad and my home town of Hull.
"The support I have received from home and in the arena has been amazing."
Welshman Fred Evans, who has delighted crowds with his no-holds-barred approach, will also hope to continue his magnificent run in the welterweight division.
Another boxer, Anthony Joshua, beat Kazakhstan's Ivan Dychko in his semi-final bout late last night to secure his place in Sunday's final.
Ed McKeever also goes for gold in the kayak sprint after storming through his heats in the fastest time of the day and then winning his semi-final in what turned out to be a formality at Eton Dorney.
The 28-year-old former world and European champion is the hot favourite to win gold after spending the first week of the games in Barcelona preparing for the race. He will be watched by fiancee Anya Kuczha, a 26-year-old PE teacher.
Their wedding plans have been put on hold until September so McKeever, dubbed the "Usain Bolt of the water", can concentrate on victory at the Olympics.
Nick Woodbridge will also be hoping to challenge for a medal in the notoriously unpredictable modern pentathlon after winning bronze at last year's Olympic test event.
Yesterday's successes in the hockey, sailing and in the ring saw Team GB's medal haul at London 2012 reach 57 - 25 gold, 15 silver and 17 bronze.
There were silvers for sailors Hannah Mills and Saskia Clark, as well as for Luke Patience and Stuart Bithell.
Despite missing out on gold, Patience and Bithell were confident they would be back at the 2016 Olympics in Rio.
Patience, from Aberdeen, said: "It's not gold but there's plenty of time. We're young boys and we'll be coming back and we'll mean business next time round yet again."
But Mills and Clark were upset to miss out on the top honour after being beaten in the final by New Zealand.
Clark said: "I'm gutted at the moment. We didn't even put a good show on really."
An emotional Mills said: "I'm pretty gutted to be honest. But we've had a wicked 18 months together and Sas is amazing, we've had a great time."
At the Olympic Park, the Duchess of Cambridge sat with gold medal winners Dame Kelly Holmes and Katherine Grainger as she cheered the British women's hockey side to a bronze medal with victory against New Zealand.
There were also bronze medals for boxer Anthony Ogogo and for Lutalo Muhammad, who was controversially chosen ahead of world number one Aaron Cook in the taekwondo.
"We don't normally get a second chance, and there was no way I was going to lose this opportunity," Muhammad said.
"My coaches told me 'this bronze is now your gold medal, so you have to treat it as a final and go for it'. That got me in the right state mentally.
"Bronze is not the colour I wanted, but it was hard earned, so I am very grateful to have this reward and hopefully next time, I can go two further to get that Olympic gold medal."
But there was disappointment for gold medal hopeful Shanaze Reade, who could only finish sixth in the women's BMX at the Velopark.