Photos: Mikaela Mayer, Jennifer Han – Face To Face at Final Presser

WBO/IBF junior lightweight world champion Mikaela Mayer, the Southern California native who is now one of the sport’s top pound-for-pound talents, is ready for her home region title defense. (photos by Mikey Williams)

Mayer will defend her belts against former featherweight world champion Jennifer Han on Saturday evening at the Orange County Fair & Event Center in Costa Mesa, California (ESPN, ESPN Deportes and ESPN+, 10 p.m. ET/7 p.m. PT).

At the press conference, it was announced that Mayer inked a multi-year contract extension with Top Rank. Mayer signed with Top Rank after representing the U.S. at the 2016 Rio Olympics.

In the 10-round co-feature, welterweight contender and San Diego native Giovani Santillan will battle Jeovanis Barraza. The ESPN telecast will open with former world champion Andrew Moloney versus Gilberto Mendoza in an eight-round junior bantamweight tilt.

The ESPN+-streamed undercard (7 p.m. ET/4 p.m. PT) features former two-time bantamweight title challenger Jason Moloney and the professional debut of U.S. Olympian Virginia Fuchs in a four-round flyweight fight.