Swimmer Tamara Potocka collapses after the women's 200-meter individual medley and is carried off on a stretcher

Swimmer Tamara Potocka collapses after the women's 200-meter individual medley and is carried off on a stretcher

NANTERRE, France -- Swimmer Tamara Potocka collapses after the women's 200-meter individual medley and is carried off on a stretcher.