Swimmer Tamara Potocká Collapses After Women’s 200-m Medley Race at Olympics

NANTERRE, France — Slovakia swimmer Tamara Potocka collapsed poolside Friday morning after a qualifying heat of the women’s 200-meter individual medley at the Paris Olympics. She was given first aid and then carried off on a stretcher.

Potocka, 21, was seen wearing an oxygen mask as she was taken away for medical attention. Medical personal at the pool said she was conscious.

Potocka collapsed as she got out of the water and almost immediately was surrounded by a half-dozen...