On Saturday, September 6, 2025, boxing fans across the globe are tuning in for one of the busiest nights of the year, with three major cards unfolding simultaneously across three countries — and only one network carrying them all: DAZN. The night’s crown jewel is the IBF junior lightweight title bout between Los Mochis, Mexico’s reigning champion Eduardo Nunez (29-1-0, 18 KOs) and challenger Christopher Diaz-Velez (25-3-1, 14 KOs) from Carolina, Puerto Rico. The main event is set for 9 p.m. EST, with ringwalks expected around 10 p.m., and it’s the first time Nunez has defended his belt on home soil — a huge moment for a fighter who’s spent most of his career fighting in the U.S. and across Latin America.
The Main Event: Nunez vs. Diaz — A Clash of Styles and Pride
What makes this bout so compelling isn’t just the title on the line — it’s the contrast in styles. Nunez, a technical pressure fighter with a devastating body attack, has spent the last two years quietly building a reputation as one of the most underrated champions in boxing. Diaz, by contrast, is a slick counterpuncher with Olympic-level footwork and a reputation for late-round comebacks. He’s won his last three fights by decision, all against top-10 contenders. The twist? Diaz hasn’t fought outside the U.S. since 2021. This is his first fight in Mexico, and the crowd in Los Mochis is expected to be 90% pro-Nunez. The IBF, headquartered in Springfield, New Jersey, has assigned veteran referee Carlos Padilla, known for letting fighters fight — a good sign for fans hoping for action.
Across the Atlantic: McCormack vs. Parra — Olympic Gold Meets Spanish Grit
While Nunez headlines in Mexico, another compelling story unfolds in Houghton-Le-Spring, United Kingdom. Former Olympic silver medalist Pat McCormack (14-1-0, 6 KOs) of Birmingham, England, steps into the ring against Spain’s Miguel Parra (22-4-1, 15 KOs) in a 10-round welterweight clash. McCormack, who lost his only pro fight by split decision in 2023, is looking to reestablish himself as a top-tier contender. Parra, meanwhile, is a power puncher with a 68% KO rate — and he’s never been stopped. The fight starts at 2 p.m. EST, but ringwalks won’t happen until 5 p.m. — a scheduling quirk that’s frustrated UK fans, many of whom had to adjust work plans to watch. Also on this card: former WBA welterweight champion Sandy Ryan faces Australian challenger Jade Grierson, and super middleweights Mark Dickinson and Troy Williamson meet in a fight that could decide who gets a shot at the British title next.
Valdez vs. Medina: A Mexican Power Play in Nogales
Just as the U.S. East Coast is heading to dinner, Oscar Valdez — the former WBC featherweight and super featherweight king from Nogales, Mexico — makes his long-awaited return to the ring. After a 14-month layoff following a shoulder injury, Valdez (30-1-0, 22 KOs) steps in against 28-year-old American prospect Ricky Medina (18-2-0, 13 KOs) in a 10-round junior lightweight bout. The fight airs exclusively on ESPN Deportes at 10 p.m. EST, a smart move to capture the Mexican-American audience. Valdez, 34, hasn’t fought since losing his WBC title to Jesse Rodriguez in 2023. But he’s trained harder than ever — and his corner says he’s dropped 15 pounds to move back down to 130. Medina, a rising star from Phoenix, is undefeated in the U.S., but this is his first fight outside Arizona. If Valdez wins convincingly, a unification bout with Nunez could be next — a dream match fans have been begging for since 2022.
The Broader Picture: A Month of Boxing, Not Just One Night
This isn’t just a big night — it’s part of a tidal wave. The IBF and IBO sanctioned three title fights in just 48 hours: Osleys Iglesias vs. Vladimir Shishkin in Montreal on Sept. 4, then this Saturday’s trio, and now a still-unnamed main event in Las Vegas on Sept. 11. The boxing calendar is filling up fast, and fans are noticing. According to dmboxing.com, September 2025 has 17 sanctioned title bouts — the most in a single month since 2019. And it’s not just the big names. The undercards are stacked with prospects: Mexico’s Angel Patron and Ricardo Gonzalez are both being tracked by Top Rank and Golden Boy. One scout told me, "There are six fighters on this card who could be world champions by 2027."
What’s Next? The Road to Benavidez and Paul
These September fights aren’t just about tonight — they’re stepping stones. A win for Nunez could set up a mandatory defense against WBA champ Shakur Stevenson next spring. Valdez’s performance may earn him a shot at the WBC interim title in early 2026. And McCormack? A victory here could land him a high-profile fight in the U.S. next year — possibly against Terence Crawford’s next opponent. The bigger picture? November’s David Benavidez vs. Anthony Yarde WBC light heavyweight title fight in Riyadh and December’s Jake Paul vs. Anthony Joshua heavyweight showdown in Miami are already selling out. This weekend’s cards are the fuel feeding that fire.
Frequently Asked Questions
How can I watch the Nunez vs. Diaz fight if I don’t have DAZN?
DAZN is the exclusive broadcaster for the Nunez vs. Diaz card, and there are no free or local TV options. However, DAZN offers a one-month free trial for new users, which is the most reliable way to watch legally. Some bars in Los Mochis, Mexico, and major U.S. cities with large Mexican or Puerto Rican communities are hosting viewing parties — check local listings. Avoid unofficial streams; they’re often unreliable and carry security risks.
Why is Oscar Valdez fighting at 130 pounds after being a featherweight champion?
Valdez moved up to super featherweight (130 lbs) after his 2023 loss to Jesse Rodriguez, hoping to find more power and longevity. But after two years of struggling to make weight at 130, he’s returned to his natural 126–130 range. He’s trimmed his body fat to 7% and says he feels stronger and faster than ever. This fight is a test — if he dominates, a move back to featherweight for a potential rematch with Rodriguez could be next.
Who is the most dangerous fighter on this card outside the main event?
Miguel Parra is the sleeper threat. He’s knocked out 15 of his last 17 opponents, including three former national champions. His left hook is considered one of the hardest in the welterweight division. Pat McCormack is a skilled technician, but Parra’s power has ended fights in the third round before. If McCormack doesn’t control distance early, this could end in a flash.
Why are so many Mexican fighters on this card?
Mexico remains the global powerhouse for producing elite, hard-hitting prospects. With DAZN and ESPN Deportes both broadcasting, promoters are capitalizing on the massive Latin American audience. Of the 12 fights on Sept. 6, nine feature at least one Mexican fighter. The country’s amateur system, combined with low-cost training camps in Sinaloa and Sonora, creates a steady pipeline. Many of these fighters are just one win away from signing with a major promoter like Top Rank or PBC.
What’s the significance of the IBF sanctioning this bout?
The IBF is one of the four major sanctioning bodies, and its titles are often seen as the most prestigious among purists. Nunez’s win in 2024 made him the first Mexican-born IBF junior lightweight champion since 2016. The organization’s strict mandatory challenger rules mean this fight was unavoidable — Diaz was the #1-ranked contender. A loss for Nunez could trigger a reshuffle in the division, possibly opening the door for U.S. star Shakur Stevenson to move up and claim the belt.
How does this weekend compare to other big boxing nights in recent years?
This is the most stacked single-night boxing card since May 2023, when Canelo vs. Bivol and Lomachenko vs. Haney both happened on the same day. What’s different now is the geographic spread — fights in Mexico, the UK, and the U.S. all happening live. It’s a sign that boxing is moving away from single-venue mega-events and toward a more global, decentralized model. If this night draws over 1.2 million viewers across platforms, it could set a new standard for how future boxing calendars are built.