American professional boxer who became the unified world champion in two weight classes in June 2018. She has two Olympic gold medals in the women's middleweight division - one from the 2012 London Olympics, and one from the 2016 Rio Olympics - making her the first American boxer to win consecutive Olympic medals, and the first American woman to win a gold medal in boxing.' She began training at Berston Field House in Flint when she was 11, with Jason Crutchfield as her trainer.