Triathlete Alistair Brownlee - together with sailing pair Hannah Mills and Saskia Clark, and Jade Jones in the taekwondo - ensured more gold medal glory for Great Britain on day 13 of the Rio Games.
Team GB's medal haul currently stands at 56 - just nine short of equalling the British record set at London 2012.
Alistair Brownlee became the first triathlete to retain an Olympic title as he led brother Jonny to a family gold and silver in Rio.
It came down to a race between the pair on the Copacabana waterfront, and Alistair made his break on the third lap of the run, pulling away to claim a dominant victory. They became the first British brothers ever to finish one and two in an individual event.
Jade Jones fought back the tears to retain her Olympic taekwondo title with a thrilling win.
Jones retained her Olympic title in the -57kg category. The 23-year-old defeated Spain's Eva Calvo Gomez 16-7 in the final with a flurry of late blows.
"It feels unbelievable," she said, admitting that she had under-estimated the pressure she would feel to perform.
Adam Gemili agonisingly missed out on a medal in the 200m final, while Usain Bolt stormed to victory (unsurprisingly).
-- Kerry Kelly (@kerrykelly63) August 19, 2016
Omg 4th at the Olympics ??? so proud of you @Adam_Gemili so agonisingly close ?? big well done ????
-- Annabelle Lewis (@BelleLewisX) August 19, 2016
-- Wadadlian Nutmegger (@WadNut) August 19, 2016
Great Britain's Adam Gemili was crestfallen after missing out on Olympic bronze by just three thousandths of a second in a fiercely competitive 200m final.
Gemili clocked 20.12 seconds, the same time as Christophe Lemaitre, but the Frenchman was given third. Eilidh Doyle finished eighth in the 400m hurdles final, while Lynsey Sharp qualified impressively for the 800m final.
Usain Bolt won his eighth gold, remaining on course for the 'triple triple'.
Bolt recorded a relatively slow time for him of 19.78s, so the real excitement was the photo-finish for bronze.
Canada's Andre de Grasse and France's Christophe Lemaitre took silver and bronze respectively.
If at first you don't succeed, try, try again.
This must have been the motto of the US women's 4×100 relay team. After disqualification from their original semi-final for a baton fumble between Allyson Felix and English Gardner, the team protested.
The IAAF gave the women another chance to qualify by re-doing their previous race to make the fastest loser time.
It proved no problem, as the team came out of that "race" with the best time of all qualifiers.
Marcus Ellis and Chris Langridge won Great Britain's first Olympic badminton medal since 2004.
-- Badminton England (@BadmintonEnglnd) August 18, 2016
-- Josh Widdicombe (@joshwiddicombe) August 18, 2016
-- cheesybug (@bridget403) August 18, 2016
The pair triumphed 21-18 19-21 21-10 in the men's doubles bronze medal match against China's Biao Chai and Hong Wei at Riocentro.
"It's like a kid at Christmas. You can dream of having 100 presents, and you wake up on Christmas Day and they are all there!" Langridge said.
"From the age of 10, I have been dreaming of an Olympic medal, and now we have done it. It is insane."