Marlen Esparza is an American professional boxer who is the former WBC, WBO, WBA and Ring female world flyweight champion. As an amateur, in 2012 she became the first American woman to qualify for the Olympics in women's boxing, in the first year that women's boxing was an Olympic event, going on to win a bronze medal in the women's flyweight division at the 2012 Olympics in London. This made her the first American woman winner of any Olympic boxing medal.

The Ring is an American boxing magazine that was first published in 1922 as a boxing and wrestling magazine. As the sporting legitimacy of professional wrestling came more into question, The Ring shifted to becoming exclusively a boxing-oriented publication. The magazine is currently owned by Oscar De La Hoya's Golden Boy Enterprises division of Golden Boy Promotions, which acquired it in 2007. Ring began publishing annual ratings of boxers in 1924. With its November/December 2022 issue, the magazine stopped publication of its regular monthly print issues and will remain a digital publication, offering occasional special interest print issues.