The 50m freestyle – also known as the splash and dash – is always one of the races of the Games.
The one-length sprint will crown the fastest swimmers on the planet and Team GB have a real contender.
Ben Proud has won world, European and Commonwealth gold throughout his career but has never won an Olympic medal.
Will this be his year?
The men’s race also has extra intrigue with the return of American superstar Caeleb Dressel.
The 27-year-old has seven Olympic golds, including five last time out in Tokyo, but pulled out of the 2022 World Championships midway through the event and subsequently took a break for his mental health.
On his return to the world stage at the US trials last month, Dressel impressed to book his slot to defend his 50m freestyle title.
The final can be a lottery, however…
When is the final? 19:30 BST, Friday 2 August