There was plenty of drama in Tokyo on Tuesday and that is set to continue as the Olympic Games ramps up further on Wednesday.
A titanic tussle in the swimming pool should be well worth watching, but action on the bikes and in the basketball court will also draw plenty of eyes.
Stats Perform guides you through the events not to be missed.
TITMUS OUT TO TOP LEDECKY AGAIN
Katie Ledecky is one of the dominant forces in the pool, taking gold in each of her prior four individual Games finals since her 2012 debut as she headed to Tokyo, but she was upset in the 2020 opener.
Ariarne Titmus, the 20-year-old Australian, beat the United States' world record holder by more than half a second in the 400m freestyle final.
Now, Titmus is coming for Ledecky's crown again as the pair do battle in the 200m freestyle, where another victory would send a significant message.
TOUR STARS TAKE ON TIME TRIAL
There are no shortage of big names in the men's time trial, with a number of Grand Tour winners involved – including Geraint Thomas, no doubt determined to put on a show after his fall in the road race.
The last two men to head out perhaps represent the most likely Olympic champions, though, as Wout van Aert and Filippo Ganna go for gold.
Van Aert won the final two stages of the Tour de France, including a time trial on the penultimate day of the race.
FOCUS ON THE FOUR
The first rowing medals of the Games are to be handed out on Wednesday, and the women's four – back in the Olympics for the first time in 30 years – should provide plenty of intrigue.
World champions Australia changed their line-up for the Olympics, having not competed internationally since taking their title in 2019. Meanwhile, the Netherlands, world silver medallists and back-to-back European champions, have been dominant.
The two teams won their respective heats, but Australia's time of six minutes and 28.76 seconds was an Olympic best and almost five seconds quicker than the Dutch. Whether that chasm will remain when the boats are side by side is another matter.
TWO-WAY TUSSLE IN THE GYM
There is more gymnastics action to look forward, with the men's individual final taking place.
Home hope Daiki Hashimoto qualified with the best score and was outstanding for Japan in the team event, yet could only take silver as the hosts were pipped by the Russian Olympic Committee.
It was Nikita Nagornyy's floor routine which sealed that Russian success and he will be bidding for another gold, having trailed Hashimoto in second in qualification.
CAN DREAM TEAM RECOVER FROM NIGHTMARE START?
The United States' latest men's basketball title defence started in miserable fashion with a defeat to France, the team who eliminated them at the 2019 FIBA Basketball World Cup.
It was Team USA's first Olympics loss since 2004, but it is highly unlikely a second will follow as they face Iran. A big performance is needed regardless to calm the critics.
While France delivered the upset in the basketball, they face their own humiliation in the football. Only a two-goal win against hosts Japan, themselves needing a point, will secure progress through Group A for Les Bleus.