WBO/IBF junior lightweight world champion Mikaela Mayer (16-0, 5 KOs) has signed a multi-year contract extension with Top Rank. Mayer defends her world titles Saturday evening against Jennifer Han at Orange County Fair & Event Center in Costa Mesa, California on ESPN.

“Mikaela has accomplished so much since making her professional debut in 2017, and she has only scratched the surface,” said Top Rank chairman Bob Arum. “She is a role model for young women in the sport and a tremendous talent. I believe she is well on her way to becoming boxing’s pound-for-pound queen, and she will be involved in the sport’s biggest events for years to come.”