After the judges gave the fight a 99-91, 100-90, 100-90 score, Puerto Rican Serrano, 34, who delivered nearly twice as many blows, hailed her pal, 41.
Heather is an incredible fighter. She’s as tough as they come,” the Brooklyn-based boxer remarked of the other.
YouTuber Jake Paul, who manages Serrano, defeated Nate Diaz, a former UFC fighter.
Along with Paul, Serrano joined the Professional Fighters League to compete in MMA, but she chose not to name names after winning.
With a victory against Erika Cruz in February, she earned the title of undisputed featherweight boxing champion and set up a prospective rematch with Irish boxer Katie Taylor, who prevailed in their lightweight matchup the previous year.
However, the British fighter Chantelle Cameron replaced the Puerto Rican after she withdrew from the rematch due to injury, handing Taylor her first defeat as a professional.
At the American Airlines Center, Paul, who has more than 20 million YouTube subscribers, appeared on the same bill alongside fellow American Diaz.
He overcame his first setback against Tommy Fury in February by winning his eighth professional fight.
In the fifth round of their ten-round fight, the 26-year-old dropped Diaz, who was making his professional boxing debut.
The 38-year-old Diaz, who departed the UFC after 15 years in 2022, forced him to work for his unanimous decision victory.
Paul has offered Diaz a $10 million offer for a match up under MMA regulations after winning the judges’ scores by scores of 97-92, 98-91, and 98-91.