World record holder and defending champion Sarah Sjostrom leads the way into women's 50 freestyle final as the only woman sub-24 seconds in semis (23.90).
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Erin Gallagher, on the heels of setting a new African Record, finaled for the 1st time and is part of a growing group of fast female South African swimmers.
The women's breaststroke events will be among the deepest at the Doha World Championships, with Ruta Meilutyte and Kate Douglass highlighting the fields.