The next instalment of Usain Bolt's quest to win a 'triple triple' sees the Jamaican go for gold in the 200 metre final on day 13 of Rio 2016.
Bolt cruised through his semi-final on Wednesday and rivals Yohan Blake and Justin Gatlin both failed to make the gold medal race, boosting his chances of retaining yet another sprint crown.
Also looking for a slice of history, Ashton Eaton is aiming to be the first man since Daley Thompson in 1984 to win back-to-back gold medals in the decathlon.
After Brazil's women's beach volleyball team lost their final on day 12, the men have their chance to go for gold on Copacabana beach - they face Italy for the title.
Belgium and Argentina each could win a third gold of the Games when they meet in the men's hockey final, and Great Britain's Brownlee brothers go head-to-head in the triathlon.
SECOND STEP TO IMMORTALITY FOR BOLT?
The charismatic Bolt has been under pressure since the start of Rio 2016 with the sprint 'triple triple' hanging over his head. Has it affected him? Not one bit.
He stormed to 100m gold ahead of rival Gatlin and has looked in complete control in the 200m rounds so far, the 29-year-old barely breaking a sweat to qualify for the final.
Bolt has won gold in the 100m, 200m and 4x100m relay in each of the past two Games, Thursday brings the chance to go two thirds of the way to collecting all three once again.
Worryingly for the other men in the race, Bolt has outlined his intention to break his own world record of 19.19 seconds, even suggesting he could break the 19-second barrier!
EATON OUT TO MATCH THOMPSON
It has been 32 years since anyone successfully retained gold in the decathlon, but Eaton has the opportunity to do just that in the Olympic Stadium.
Seven editions of the Games have come and gone since Thompson reigned supreme in the event, and finally Eaton looks like matching the Briton's impressive achievement.
After five events he has a 121-point lead over Kai Kazmirek and must successfully negotiate the 110m hurdles, discus, pole vault, javelin and 1500m to secure back-to-back titles.
Four years ago in London, Alistair Brownlee took triathlon gold ahead of his brother Jonny - who finished third - and they are back to vie for medals in Rio.
With reigning world and European champion Javier Gomez not in Brazil due to a broken arm, the British brothers are strong favourites to medal over the gruelling course.
A 1.5km open sea swim is followed by a testing 40km bike ride, with gradients reaching 20 per cent at times, before a 10km run to the finish line.
Spain's Mario Mola and Fernando Alarza are expected to challenge the Brownlees, but beating the brothers could prove difficult.
UNBEATEN YOSHIDA LOOKS TO EMULATE ICHO
Since women's freestyle wrestling was introduced to the Games in 2004 two Japanese grapplers have dominated - Kaori Icho and Saori Yoshida.
Icho claimed three golds in the under-63kg category at the last three Games and became the first to win four when she claimed victory in the under-58kg in Rio.
Compatriot Yoshida is equally as dominant in the under-53kg event, and the 33-year-old will look to match Icho with a fourth gold on Thursday to add to her 13 world championship titles since 2002.