Mikaela Mayer and Alycia Baumgardner Make Weight | Unification Bout Official Sat 2:30 PM ET ESPN+

Watch as #mikaelamayer and #alyciabaumgardner make weight and have fiery faceoff before Saturday night's huge double main event on ESPN Next up for Top Rank Boxing, Two heated rivalries will come to a head Saturday, Oct 15 in a historic championship doubleheader at the O2 Arena in London. The previously announced main event will see two-time Olympic gold medalist Claressa Shields, the WBC/WBA/IBF/Ring Magazine middleweight champion, aim to once again become undisputed at 160 pounds by facing longtime rival and WBO titleholder Savannah Marshall. Shields and Marshall faced off as amateurs, with Marshall edging Shields by decision at the 2012 AIBA Women’s World Championships in Qinhuangdao, China. Shields went 77-1 as an amateur and is the only female boxer to win undisputed titles in two weight classes. In the co-feature, Mikaela Mayer will look to get one step closer to becoming the first undisputed champ in her division by putting her WBO/IBF/Ring Magazine junior lightweigh