Lucero vs Valenzuela Jr

Who won Lucero vs Valenzuela Jr?

Isaac Lucero beat Roberto Valenzuela Jr by technical knockout in the 8th round on Saturday, December 6th, 2025, at Frost Bank Center, San Antonio.

The fight was scheduled to take place over 10 rounds in the Super Welterweight division, which meant the weight limit was 154 pounds (11 stone or 69.8 kg).

This fight appeared on the undercard of Isaac ‘Pitbull’ Cruz beating Lamont Roach for the WBC Interim World Super Lightweight championship. Also on the undercard Stephen Fulton lost to O’Shaquie Foster for the WBC Interim World Lightweight belt, Jesus Ramos defeated Shane Mosley Jr for the WBC Interim World Middleweight title, and Erislandy Lara was victorious over Johan Gonzalez.

Lucero vs Valenzuela Jr stats

Isaac Lucero stepped into the ring with an undefeated record of 17 wins, zero losses, and 0 draws.

Roberto Valenzuela Jr made his way to the ring with a record of 31 wins, 5 losses and 0 draws.

Isaac Lucero was the older man by 1 year, at 27 years old.

Valenzuela Jr had a height advantage of 2 inches over Lucero.

Both Isaac Lucero and Roberto Valenzuela Jr fought out of an orthodox stance.

Lucero was the less experienced professional fighter, having had 19 fewer fights, and made his debut in 2019, 3 years and 5 months later than Valenzuela Jr, whose first professional fight was in 2016. He had fought 28 fewer professional rounds, totaling 91 compared to Valenzuela Jr's 119.

Isaac Lucero went into the fight ranked number 6 by the WBA at super welterweight.

Activity check

Valenzuela Jr's last 3 fights had come over a period of 5 years, 11 months and 23 days, meaning he had been fighting on average every 1 year, 11 months and 29 days. In those fights, he fought a total of 20 rounds, meaning that they had lasted 6.7 rounds on average.

What time did Lucero vs Valenzuela Jr start?

The fighters were expected to ringwalk at around 7:00 PM EST / 4:00 PM PST at Frost Bank Center, San Antonio, United States, which was around 12:00 AM GMT in the UK.

Who broadcast Lucero vs Valenzuela Jr?

Lucero vs Valenzuela Jr was broadcast on Amazon Prime Video in both the United States and the UK.

What were the odds on Lucero vs Valenzuela Jr?

Isaac Lucero was a 2/15 (-770) favorite going into the contest, while Roberto Valenzuela Jr made his way into the ring at 9/2 (+450) with oddsmakers.