Puerto Rico native Zayas is the reigning WBO and WBA junior middleweight world champion. At 23 years old, he is boxing's youngest current unified world champion.

He made history in 2019 when he became the youngest fighter ever — at 16 years of age — to sign a professional contract with Top Rank. Zayas turned pro two months after his 17th birthday.

He won his first regional title in August 2022 ...

The Cleveland-born Mason is boxing's youngest male world champion, having won the WBO lightweight world title in November 2025 with a unanimous decision victory over Sam Noakes. He also became Cleveland's first world champion in more than a decade.

In 2024, he KO'd all five of his foes in four rounds or less. He made his main event debut in June 2025 in Norfolk, Virginia, turning away Namibian pun...

Muratalla is a nine-year pro who debuted in September 2016. Trained by Robert Garcia, he plied his trade on Southern California cards for years before surging into world title contention in May 2023, knocking out big-punching Jeremia Nakathila in two rounds.

In 2024, he earned decision wins over Xolisani Ndongeni and former world champion Tevin Farmer, before closing the year with a blistering sec...

One of boxing's fiercest action fighters, Mbilli is the current WBC super middleweight world champion. He had an outstanding amateur career at the elite international level, representing France at the 2016 Rio Olympics before turning pro the following year. Mbilli knocked out his first 13 opponents and became one of Quebec's biggest star attractions.

Mbilli won the vacant WBC Interim super middlewe...