Strawweight Gustavo Perez scored the biggest win of his career Saturday night, defeating Jesus Haro by unanimous decision in Haro’s backyard at the Centre Plaza in Modesto, California.

Despite serving as the co-feature, the bout carried potential title implications due to the division's lack of depth.

The judges scored it 78-74, 80-72 and 80-72, all in favor of Perez. 

Perez, 14-1 (4 KOs), a 26-year-old from Baja California, Mexico, recorded his first U.S. win after losing his only other fight in the states in 2022, landing power shots that made a difference against the 22-year-old Haro, 12-3 (1 KO), from Merced, California.

The orthodox-southpaw clash saw three head clashes by the fifth round, with referee Michael Margado effectively signaling each incident. Perez closed the fight by landing a straight left followed by a right hook.

Ranked No. 15 by the WBA, Haro, a decorated amateur, has now dropped two consecutive bouts.

In the main event, undefeated lightweight Jose Luis Vazquez earned an eight-round unanimous decision over Stockton, California’s Giovannie Gutierrez. The judges scored it 79-73, 77-75 and 78-74 for Vazquez.

The 22-year-old Vazquez, fighting out of Tlaquepaque, Jalisco, Mexico, improved to 17-0 (3 KOs), while the 34-year-old Gutierrez, 20-7-2 (15 KOs), struggled to match Vazquez’s speed and effective jab throughout the contest.

After the fight, Gonzalez said it would probably be his last fight.