Eddie Hearn, whose Matchroom Boxing typically operates three weight classes and an ocean away from the octagon, has publicly halted UFC interim heavyweight champion Tom Aspinall's next fight until the promotion rewrites what he calls an "outrageous" contract. The move places a 255-pound champion in limbo and injects boxing-promoter leverage into a sport where fighters historically negotiate alone.
Aspinall holds the UFC interim heavyweight belt after knocking out Sergei Pavlovich in 69 seconds last November, then defended it against Curtis Blaydes in 60 seconds this past July. His contract, signed before the title run, pays a disclosed $500K per fight—a figure Hearn argues fails to reflect a champion who fills Manchester's Co-op Live arena and whom the UFC uses to anchor European pay-per-view windows. Hearn told reporters last week he "won't allow" Aspinall to compete under current terms, a phrase borrowed from boxing's promotional playbook where managers control fight approvals. The UFC, which holds Aspinall under an exclusive multi-fight deal through 2026, has not commented.
The intervention matters because UFC champions rarely have boxing-grade representation. Most operate with MMA-specific managers who lack the media apparatus or promotional alternatives to create bidding tension. Hearn, who co-promotes Aspinall's boxing interests through a side deal struck in early 2024, brings Matchroom's $1B+ annual event revenue and DAZN distribution leverage to a negotiation the UFC would normally control entirely. His public pause mirrors the strategy he used in 2022 when he withheld Dmitry Bivol from a Canelo rematch until Riyadh Season money appeared. The tactic works in boxing because promoters hold network commitments and can move fighters between platforms. In MMA, where the UFC owns 90%+ of the premium heavyweight market and no rival promotion pays eight figures, the math is uglier.
Aspinall's case arrives as UFC lightweight contracts also fracture. Loik Radzhabov rejected his renewal offer this week to fight in Russia's AMC League, where regional promotions now pay $150K-$300K for ranked fighters the UFC prices at $50K. Rafael Fiziev, another lightweight, is negotiating his third UFC contract with disclosed career earnings under $2M despite headlining three Fight Night cards. The pattern suggests UFC's tiered pay structure—where champions earn $500K-$750K per fight and stars like Conor McGregor negotiate separately—leaves a gap between title holders and the $3M-$5M boxing promoters can generate through Saudi or DAZN deals for equivalent names.
Hearn's demand centers on reworking Aspinall's per-fight purse to $3M+, matching what Matchroom pays unified cruiserweight champions, and adding co-promotion clauses that let Hearn monetize Aspinall's boxing exhibitions separately. The UFC has historically rejected co-promotion since the Affliction-era 2008-2009, when Fedor Emelianenko's management used it to bypass exclusive deals. If Hearn succeeds, every champion with crossover visibility will hire a boxing promoter as leverage. If he fails, Aspinall sits until his contract expires or Hearn steps back—neither scenario improves the UFC's December Manchester card, which currently holds Aspinall's slot open.
Watch whether Aspinall appears at UFC 313 in March, the promotion's next heavyweight-capable pay-per-view. If he doesn't, Hearn's pause is real and the UFC faces either paying boxing-tier money or letting a champion age out during his athletic prime. Also watch whether other UFC champions add boxing promoters to their teams before next contract cycles—lightweight titleholder Islam Makhachev renews in Q4 2025, and his management has already met with Riyadh Season officials twice this year.
The interim heavyweight belt was created to keep Tom Aspinall active while Jon Jones recovered. Eddie Hearn just made it the most expensive interim title in UFC history, and the check hasn't cleared yet.
The takeaway
Eddie Hearn's public halt of Tom Aspinall's UFC return imports boxing's promotional leverage into MMA contract negotiations, forcing the promotion to choose between **$3M+** paydays or letting a champion sit idle.
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