William Zepeda Outworks Lamont Roach to Secure Vacant WBC Lightweight Championship

William Zepeda utilized a high-volume attack to defeat Lamont Roach by unanimous decision at Virgin Hotels Las Vegas, capturing the vacant WBC lightweight world title.

William Zepeda (34-1, 27 KOs) secured the vacant WBC lightweight world title on Saturday night at Virgin Hotels Las Vegas by earning a unanimous decision victory over Lamont Roach. The official scorecards read 117-111, 117-111, and 118-110, reflecting a performance where the Mexican southpaw dominated the statistical output. According to CompuBox data, Zepeda landed 142 power punches compared to 124 for Roach, while maintaining a significant 76-29 advantage in successful jabs throughout the twelve-round contest. This triumph allowed the 28-year-old to rebound from his July 2025 loss to Shakur Stevenson and claim a major belt in one of boxing's most competitive divisions.

Key details

The punch volume differential was most evident in the body attack, where the new champion outlanded his opponent 62-25. Zepeda’s relentless pressure forced Roach to fight off the back foot for the majority of the evening, preventing the challenger from establishing a consistent rhythm. By the middle rounds, the disparity in activity levels became the deciding factor for the judges, as Zepeda consistently exceeded 60 punches thrown per frame. This victory marks a successful return to the win column for the San Mateo Atenco native, who had previously seen his undefeated record snapped in a high-profile unification attempt.

Following the result in Nevada, Zepeda ascended two positions in the ESPN divisional rankings to occupy the No. 3 spot at 135 pounds. He now sits directly behind Raymond Muratalla, who also competed on the same Las Vegas card. Muratalla defended his IBF lightweight title in the co-main event, securing a unanimous decision over former junior lightweight titleholder Robson Conceicao. The judges in that bout turned in lopsided scores of 119-109, 119-109, and 118-110, ensuring that the top of the lightweight hierarchy remains dominated by active titleholders with recent marquee wins.

Latest developments

The lightweight landscape is currently defined by a strict set of ranking criteria managed by a panel of boxing experts. To remain eligible for these standings, a fighter must have competed within the last 12 months or have a confirmed upcoming bout on the schedule. Zepeda’s activity level has been a primary driver of his ranking, as he has remained a frequent participant in high-stakes matchups over the last two calendar years. Fighters who test positive for performance-enhancing substances are immediately removed from these lists and cannot return until they have completed a subsequent sanctioned match without incident.

Weight class transitions also impact how these athletes are viewed by the ranking committee. If a boxer announces a move to a different division, they are typically removed from their current weight class and only reappear once they have officially weighed in and competed at the new limit. However, champions who hold belts in two different categories simultaneously are permitted to hold rankings in both divisions. This policy ensures that the 135-pound list, which currently features Zepeda and Muratalla in the top three, accurately reflects the most dangerous and active participants in the world today.

The 17 professional weight classes, ranging from the 105-pound strawweight limit to the unlimited heavyweight division, are updated weekly to account for results like the one seen at Virgin Hotels. Zepeda’s acquisition of the green WBC belt places him in a mandatory position for future unifications, potentially setting up a rematch with Stevenson or a clash with other titleholders in the top five. His ability to maintain a high work rate while absorbing only 124 power shots over 36 minutes of action suggests a defensive improvement since his previous outing. As the lightweight division continues to consolidate its titles, Zepeda’s statistical dominance in Las Vegas serves as a benchmark for the rest of the contenders chasing the No. 1 ranking.