Puerto Rican tennis player Monica Puig won her nation's first ever individual Olympic gold after defeating Germany's Angelique Kerber in Rio's women's singles tennis final on Saturday. The unseeded 22-year-old defeated Kerber 6-4, 4-6, 6-1, to become Puerto Rico's first female Olympic medalist. Men's defending champion Andy Murray will face Juan Martin Del Potro in the men's final later tonight.