Top Rank Boxing on ESPN will be presented live on Saturday, January 20, at 2 p.m. ET/11 a.m. PT, exclusively in the U.S. on ESPN+. The event takes place at the M&S Bank Arena in Liverpool, England. (photos by Lawrence Lustig)

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In the main event, two-weight world champion Natasha Jonas will defend her IBF welterweight world title against former unified world champion Mikaela Mayer.

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Having previously unified the WBC, WBO and IBF junior middleweight world titles, Jonas (14-2-1, 9 KOs) will be making the first defense of her welterweight crown, which she claimed after scoring an emphatic stoppage win over Canadian Kandi Wyatt last year.

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Mayer (19-1, 5 KOs), a fellow Olympian and former IBF, WBO, and Ring Magazine junior lightweight world champion, moves up in weight once again as she attempts to become a two-division world champ.

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In other streaming action on ESPN+, Jack Cullen (22-4-1, 10 KOs) returns to defend his British and Commonwealth super middleweight titles against former foe Zak Chelli (14-2-1, 7 KOs).

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