Amanda Serrano, Puerto Rico's seven-division world champion, will retire after defending her unified featherweight titles against Australian opponent Skye Falzon on home soil, in a bout her promoter dubbed "The Last Walk".

Most Valuable Promotions stated that Serrano, who holds a 50–4–1 record with 32 knockouts, will defend her WBO and WBA featherweight world titles on 9 January at Coliseo de Puerto Rico in San Juan.

Puerto Rico's only undisputed boxing champion is also targeting the all-time female knockout record, which the 38-year-old jointly shares with American Christy Martin.

"Boxing has been my life and I never could have imagined the journey it would take me and my family on," Serrano said in a statement.

"From the early days when women's boxing was fighting for recognition in small theatre shows, to headlining Madison Square Garden in New York, reaching millions of fans around the world on the biggest shows, and helping open doors for the next generation of female fighters... I always believed and I'm proud of everything we've accomplished."

Serrano made history alongside Ireland's Katie Taylor in 2022 when they became the first female fighters to headline New York's Madison Square Garden.

The highest-profile rivalry in women's boxing produced a trilogy of contests, which Taylor swept via majority decision in 2025.

A Guinness World Record holder for winning titles across seven weight divisions, Serrano also became a leading voice for equality in women's boxing.

In 2023, she competed in the first women's unified world championship bout over 12 three-minute rounds, later voluntarily vacating her WBC title rather than abandon her commitment to equal rules.

"'The Last Walk' is a celebration of an athlete who changed the sport forever... We're proud to give Amanda the farewell she deserves," said Nakisa Bidarian and Jake Paul, founders of Most Valuable Promotions.

"Saturday, January 9, will mark the end of an extraordinary career inside the ring, but Amanda's legacy will live on through every female fighter who follows in her footsteps."

Falzon, who is also 38, holds a 12-2 record with seven knockouts.