Putting all of his chances in just one event, the 5th fastest performer ever, Ben Proud will look to qualify for the Olympic Team in the 50 free tonight.
Matthew Richards, the British record holder, leads the 100 Freestyle event, but a strong group behind, including Thomas Dean, will look to usurp his title.
Adam Peaty already hit the Nomination Standard by nearly a second but will need to replicate the feat tonight in order to be able to defend his Olympic gold.