On Sunday, Up2Us Sports Ambassador Claressa Shields made history by becoming the first American boxer - male or female - to win back-to-back Olympic gold medals. The Flint, Michigan native beat Netherlands fighter Nouchka Fontijn 3-0 (40-36, 39-37, 39-37) in the middleweight category. A heavy favorite going into Rio, she was given a first round bye before beating Russia’s Yaroslava Yakushina in the quarterfinals and then Kazakhstan’s Dariga Shakimova in the semi-finals.Shields joined Up2Us Sports as an Ambassador in 2014 and has not only been a voice for, but an example of, how a you can succeed when you have an incredible coach in your corner. Learn more about her incredible journey of overcoming the odds and coming out on top by watching T-Rex: Her Fight For Gold, an award-winning documentary of her journey to winning gold in the 2012 London Games. T-Rex is currently showing on PBS’ Independent Lens.