There are 23 more gold medals to be fought over on Thursday, Sportneversleeps delve into some of the potential highlights...
"In his first race back from surgery Alistair finished 26th, has he left it a bit too late to regain that title-favourite fitness? Mario Mola could represent better value as a result."
Triathlon: Men's Race
The men's triathlon takes place on Thursday afternoon with an open sea swim and some very steep hills in the cycling portion of the race making the course one of the toughest ever.
Step up two brothers from Yorkshire who thrive on tougher courses. The Brownlees have put triathlon on the map in Britain after gold for Alistair and bronze for Johnny in London.
Their biggest rivals for a medal here look like being the Spanish athletes, specifically Mario Mola now that three-time World Champion Javier Gomez is ruled out with injury.
The story for Alistair is all about his ankle surgery. He took a calculated risk going under the knife before the Olympics. In his first race back from the surgery Alistair finished 26th, has he left it a bit too late to regain that title-favourite fitness? Mola could represent better value as a result.
Johnny's question mark is coping with searing heat. He required medical assistance after a recent World Series event (won by Mola). Although humid, temperatures look like staying below 30°C at race time, cooler than the brutal heat in that World Series event in Australia.
Back Mario Mola to win triathlon gold @ [4.1]
Back Jonathan Brownlee to win a medal @ [1.8]
Taekwando: Women's -57kg final.
Just as the Brownless have put triathlon on the map the cheeky-grinned Welsh athlete Jade Jones did likewise for Taekwando four years ago.
She's still the world number one at featherweight (-57kg category) and will begin her defence in a last 16 bout with Moroccan Naima Bakkal at 14:30. All rounds will take place later today.
Eva Calvo Gomez will be a serious threat to the title. The Spaniard won European Championship gold in 2015 and World Championship silver in 2015.
The winner of gold in that 2015 Worlds was Mayu Hamada, she is available at a [5.4] to match that feat here in Rio.
Back Jade Jones to win gold @ [2.42]
Back Eva Calvo Gomez to win gold @ [3.9]
Diving: Women's 10m Platform Final.
Tonia Couch will fly the flag for Great Britain after Sarah Barrow was eliminated in the preliminary competition. Couch still has a semi-final (at 2pm) to navigate before the 8pm final.
The Plymouth based diver won silver in this event in the recent European championships but will do extremely well to sneak on the podium here.
The reason for that is the Chinese divers are taking part here. China are to diving what Great Britain are to track cycling. They have already won five of the six gold medals on offer in this games and will be favourites to make it six out of seven.
Even in a sport with such precarious fine-lines as diving the main question is likely to be which Chinese diver will win gold? Fifteen-year-old Qian Ren is the bookies' favourite just ahead of 17-year-old Yijie Sie. The latter finished top in the prelims however.
If Couch nails all five rounds there is a chance of bronze, currently available at [4.0]. In reality her 5th place in the prelims looks a more accurate gauge of where she can expect to finish here.
Back Yijie Sie to win gold @ [2.34]
Back Melissa Wu to win a medal @ [2.58]