The teenager won the 12-member American team's only gold medal in London. The winningest nation in Olympic boxing history got no medals from its men's team for the first time, and flyweight Marlen Esparza won a bronze.
Shields has been on the international boxing scene for less than two years, but the Flint, Mich., native is among its fastest-rising stars. She lost early in the world championships, yet still qualified for the Olympics.
