Great Britain's Jazz Carlin will face the USA's Katie Ledecky in tomorrow's final of the 800m freestyle at the World Championships in Kazan after comfortably coming through the heats this morning.
Carlin, who is the European champion in this event, led the first 200m of heat four alongside Australia's Jessica Ashwood.
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At the halfway stage, Carlin extended her lead by 1.25s, but she eased up slightly as Ashwood moved ahead by the slightest of margins on the 600m mark.
In the final 50m, Ashwood pulled away from Carlin, who faded to finish second in a time of 8:23.83, while the Brit's compatriot Jessica Thielmann clocked 8:36.88 to finish seventh, but it was not enough to qualify for the final.
In the last heat of the session, Ledecky, who broke the world record in the 1500m event on Tuesday, headed into this morning's heat on the back of four gold-medal victories this week.
The 18-year-old dipped under the world-record time in the first 100m and managed to keep up the pace until the halfway mark when she eased off slightly.
The American could afford to drop back due to her commanding lead and she eventually eased to the wall in 8:19.42, which was the fastest time of the five heats.
Danielle Joynson
