- Kerron Clement of the United States held on in the closing stages to win gold in the 400 metre hurdles and claim his first individual Olympic title.
- Jamaica's 4x100m relay teams cruised into the men's and women's finals, despite the absence of Usain Bolt from the former.
- United States will re-run their women's relay heat during the second athletics session after successfully appealing their disqualification for a botched handover.
- Ashton Eaton's advantage in the decathlon stands at 115 points with three events remaining, the American having turned in solid performances in the 110m hurdles and discus.
- Alistair Brownlee beat brother Jonny to men's triathlon gold, successfully defending the title he won for Great Britain in 2012.
QUOTES OF THE DAY
"It's amazing. We wanted to get gold and silver four years ago, but this time we pulled it off. When Jonny crossed the line, I said to him, 'We've done it'. To see little brother come over the line 10 seconds after you is phenomenal. It's so satisfying. - Alistair Brownlee on his triathlon triumph.
"It means so much. I was focused and my mind was set. I showed determination and a will to win and this is something I wanted with all my heart." - Clement reflects on fulfilling an ambition.
"I think I got propelled at about 20 miles an hour. When a foreign object comes in front of you, it's going to mess up the momentum and the handover." - Allyson Felix explains she was impeded during her handover mishap.
Alistair Brownlee built up so much of a lead in the men's triathlon, he had time to collect the flags of Great Britain and Yorkshire and walk over the finish line.
The older Brownlee sibling had formed part of a breakaway group of 10 with his brother in the cycle, before stepping up a gear in the latter stages of the run to win convincingly.
With victory in the bag, Alistair slowed down to catch a glimpse of Jonny closing in, and the pair collapsed to the ground upon crossing the line six seconds apart.
Javier Gomez kept the two apart at London 2012, but with the Spaniard ruled out through injury, it was the British brothers who occupied the top two steps on the podium this time around.
Bolt goes for his second gold of the Games in the men's 200m final, aiming to keep his triple triple alive, while Eaton will hope to hold on to his lead and retain his decathlon crown.
Away from the Olympic Stadium men's finals in hockey and beach volleyball will be contested, while gold medals will also be handed out in the diving, wrestling and taekwondo.