The Olympic champion qualified with the eighth fastest time in the heats
Daniel Wiffen is through to the final of the men's 800-metres freestyle at the World Aquatics Championships in Singapore.
The Olympic champion qualified with the eighth fastest time in the heats, in 7minutes 46.36 seconds.
In the men's 200-metre butterfly, Jack Cassin failed to advance after posting a time of 1 minute 57.08 seconds in his heat.

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