Josh Popper secured a definitive victory in the Atlantic City heavyweight scene on June 13, 2026, knocking out Bruce Seldon Jr. in just 30 seconds at the Tropicana Atlantic City Showroom. The main event, which promoter Larry Goldberg described as a “fight they said couldn’t be made,” ended before many spectators had even reached their seats. Popper landed a lead left hook followed by a left uppercut and a final hook that sent Seldon Jr. to the canvas, prompting the referee to wave off the contest without a count.
The victory moves the Egg Harbor Township native, known as “The Hammer,” to an 8-0 record with seven knockouts. Seldon Jr., the 31-year-old son of former WBA heavyweight champion Bruce Seldon Sr., suffered his first professional defeat, falling to 8-1. The clash served as the centerpiece of a seven-bout card from Boxing Insider Promotions, billed as the “last American club boxing series.”
Despite the swift ending, the matchup was the culmination of a regional rivalry that Goldberg noted was almost a year in the making. The promoter faced numerous hurdles in grouping two undefeated local heavyweights, a rarity at the club level where undefeated records are often protected. “A fight they said was impossible just got made,” Goldberg said following the event. “Two undefeated heavyweights with real local history went at it, and it was settled in one clean shot.”
The heated build-up to the Popper vs. Seldon heavyweight clash
The tension between the two camps was palpable throughout the promotion. Issues arose over everything from promotional billing to which fighter would occupy the red corner. The dispute over the corner assignment became so contentious that it was eventually settled by a coin toss conducted with a boxing commissioner present in the room.
Communication between the camps was equally strained. Goldberg revealed that the teams refused to pose for a joint photograph prior to the weigh-in, with one camp expressing concerns about being used for “clout.” The fighters also engaged in personal barbs during a digital face-off, including a heated argument regarding a high school football game that took place 17 years ago.
This level of intense local interest helped pack the Tropicana Showroom, even as the event competed for attention with a New York Knicks Game 5. While the basketball game reportedly affected the last-minute walk-up ticket sales, the atmosphere inside the venue remained charged for the 21st show produced by Boxing Insider Promotions since late 2022.
Sportsmanship and safety protocols following the knockout
Once the fighting ceased, the hostility of the build-up gave way to mutual respect. Popper praised his opponent in the ring, telling Seldon Jr., “You’re a hell of a man, you’re a hell of an opponent.” This sentiment extended back to the dressing rooms, where Popper’s trainer, Jose Luis Guzman, visited Seldon Jr.’s camp to shake hands with coach Julio Sanchez and the defeated fighter.
The clinical nature of the knockout means Seldon Jr. will now enter a mandatory recovery period. Under New Jersey commission regulations, he must undergo a neurological examination and further medical evaluations before he is cleared to return to the ring. Goldberg emphasized that these protocols are a vital part of the system designed to protect athlete health after significant stoppages.
While some heavyweights prefer to wait for major network dates, Popper’s willingness to take a high-risk local fight has increased his standing in the division. This aggressive approach to matchmaking is a hallmark of the current era, where fans often demand more transparency, much like when Robeisy Ramirez calls out Mauricio Sulaiman over administrative hurdles in the sport.
Brito stops Butt in super lightweight co-feature
The undercard provided several clear-cut results for the Atlantic City crowd. In the co-feature, Willmank Canonico Brito of Rosarito, Mexico, defeated Philadelphia’s Daiyaan Butt via a fourth-round stoppage in their super lightweight bout. The win moves Brito to 13-10-2, while Butt moves to 20-4.
Other results from the evening included:
- Damian Tinnerello (5-0) defeated Abdalla Nagy via 2nd-round stoppage.
- Kahshad Elliott (7-0) defeated Scottie Stockman via 3rd-round stoppage.
- Julio Sanchez III (4-1) secured a victory in his 4-round super lightweight bout.
- Jahanzeb Rizwan (1-0) and David Malul (4-0) also maintained their winning streaks.
This consistency of action is what keeps regional boxing alive, providing a platform for local talent to develop. Similarly, modern stars often have to address their own paths to the top, as seen when Shakur Stevenson faces fan scrutiny over his career trajectory and public persona.
Future outlook for Josh Popper and the local heavyweight scene
Following the 30-second highlight reel, Josh Popper is now focused on moving toward the “next level” of the heavyweight division. Weighing in at 250 lbs and training out of the Bredwinners Gym in Manhattan, Popper has effectively cleared out the local competition in the South Jersey area. Goldberg described him as a “free agent” with significant marquee appeal heading into the second half of 2026.
Wait-and-see approaches rarely work in the heavy-hitting world of the big men. As Popper looks for more prominent opponents, he joins a long list of fighters seeking to cement their legacy through active competition. This mirrors the legendary determination of icons like Roberto Duran who identified astute opponents based on their ring generalship and tactical bravery.
Boxing Insider Promotions plans to continue its series of cards in both New York City and Atlantic City. For Goldberg, the success of the June 13 event proves that there is still a massive appetite for “impossible” fights between undefeated rivals. Popper’s left hand may have ended the night early, but it has started a new chapter for heavyweight boxing in the Northeast.
