Watch the kickoff #pressconference for the huge welterweight championship fight between #mikaelamayer and #natashajonas Two-weight world champion Natasha Jonas will defend her IBF welterweight world title against former unified world champion Mikaela Mayer in a landmark night for women’s boxing as two of the sport's biggest stars meet on Saturday, Jan. 20 at the M&S Bank Arena in Liverpool, England, live on ESPN+ in the U.S. and Sky Sports in the UK and Ireland. Jonas (14-2-1, 9 KOs) will be making the first defense of the IBF crown she claimed with an emphatic stoppage win over Canadian Kandi Wyatt earlier this year, having previously unified the WBC, WBO and IBF junior middleweight world titles. Standing in the opposite corner will be U.S. star Mayer (19-1, 5 KOs), a fellow Olympian and the former IBF, WBO, and Ring Magazine junior lightweight world champion. The Los Angeles native was one of the stars of BOXXER’s historic women’s night last year, and after capturing the WBC in