Former NFL defensive end Greg Hardy missed weight by 25 pounds, entered the cage carrying a 52-pound size advantage over his opponent, and still got knocked out in the third round Saturday at Fight Nation Championship 31. Serbian heavyweight Darko Stosic landed a left hook that sent Hardy backward, followed by a hammer fist to the jaw that ended the fight before Hardy could recover.
The referee stopped the bout and awarded Stosic the knockout victory, extending one of the more punishing losing streaks in recent MMA memory for a former professional athlete.
Hardy, who played defensive end for the Carolina Panthers and Dallas Cowboys, has now lost four of his last five MMA bouts. Every one of those four losses came by knockout or technical knockout. Fox News Digital reported that the stoppage came early in the third round after Stosic opened with a left hook that buckled Hardy, then followed with what was described as a "windmill punch" Hardy never saw coming. One hammer fist to the jaw sealed it.
Hardy reportedly came in 25 pounds over the contracted weight for the bout. That gave him a staggering 52-pound edge over Stosic. In combat sports, weight classes exist for a reason, to prevent mismatches that endanger lighter fighters. Here, the mismatch ran in Hardy's favor on paper and still produced a decisive loss.
Stosic, who improved to 23-8 overall with 17 career knockouts, has now won six of his last eight fights. He is riding a two-bout winning streak after previously defeating Oli Thompson at Fight Nation Championship 27.
Hardy's trajectory tells a different story. His last two UFC fights, a loss to Tai Tuivasa on July 10, 2021, and a loss to Serghei Spivac on March 5, 2022, both ended in the first round. After leaving the UFC, Hardy picked up a unanimous decision win over Philip Latu on the Peak Fighting 50 card in January, but Saturday's knockout erased whatever momentum that victory provided.
Hardy's transition from the NFL to mixed martial arts drew attention from the start. A former Pro Bowl-caliber pass rusher, he brought raw athleticism and name recognition into the cage. But elite-level fighting demands a different kind of conditioning, discipline, and technical refinement, and the results over the past several years suggest Hardy has struggled to close that gap.
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Hardy's story offers a contrast. Missing weight by 25 pounds before a fight is not a minor oversight. It reflects either a breakdown in preparation or a lack of regard for the competitive framework. Either way, the result was the same: a fighter who outweighed his opponent by more than 50 pounds ended up flat on the mat.
While Hardy's record has cratered, Stosic has quietly built a strong résumé. His 23-8 record includes 17 knockouts, a finishing rate that speaks to legitimate power and timing. Fox News noted that Stosic has won six of his last eight bouts, a stretch of consistency that stands in sharp relief against Hardy's four knockout losses in five fights.
Stosic gave up significant size in this matchup and still walked Hardy down. That takes confidence earned through preparation, not just talent borrowed from another sport.
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In Hardy's case, the rules gave him every advantage. He was the bigger man by a wide margin. He had the NFL pedigree. He had the weight overshoot that, in theory, should have translated to more power and durability in the cage.
None of it mattered when Stosic's left hook landed.
Hardy's career timeline now reads like a cautionary tale for athletes who believe size and fame translate automatically into fighting success. His UFC run ended with consecutive first-round losses. His post-UFC run has produced one decision win and a brutal knockout defeat, the latter coming despite every physical advantage a fighter could ask for.
The specific location of Fight Nation Championship 31 was not disclosed, and the exact stoppage time within the third round remains unclear. What is clear is the pattern: Hardy keeps getting stopped, and the finishes keep getting decisive.
Whether Hardy continues fighting or steps away, Saturday's result will follow him. Four knockout or TKO losses in five bouts is not a slump. It is a trend, and trends in combat sports carry real consequences.
Missing weight by 25 pounds and still losing by knockout tells you everything you need to know. The scoreboard doesn't care about your résumé.