CSI Entertainment has filed an in junction against Floyd Mayweather from fighting this Saturday in Greece against Mike Zambidis.
The lawsuit was filed in New York Federal Court late last week. CSI Entertainment is the promoter that states it has the exclusive right to promote Mayweather’s fights against Mike Tyson and Manny Pacquiao.
The brief in support of the injunction notes that it secured the rights to the Tyson fight in August 2025 for it to occur in the spring of 2026. Tyson injured himself during training and the fight is now set to occur later in 2026.
Notably, it signed with Mayweather’s promotional company and advanced him through the company $2 million.
In November 2025, it secured the rights to the Pacquiao fight. As it did with the Tyson fight, it signed with Mayweather’s promotional company and advanced $2.5 million.
As with all injunctions, it has to make the argument as to why monetary damages will not suffice.
In December 2025, CSI Entertainment claims Mayweather signed an agreement with a third-party promoter which was a material breach of his agreement. The contract with “Everwonder” paid Mayweather a $2.75M advance for a fight with Manny Pacquiao on Netflix. Notably, it had paid Mayweather’s promotional company $2.5M for what seems to be the same fight.
Notwithstanding the December 2025 breach with Everwonder, the above agreement to fight Greece kickboxer Mike Zamidis was another material breach. It was not until January that CSI Entertainment discovered the breach. Instead of a lawsuit, the parties attempted to negotiate a deal to continue the relationship for Mayweather fights. Notably, CSI Entertainment relinquished some rights for the Pacquiao fight but also included the exclusive right to Mayweather’s next fight after Pacquiao.
Also, it had signed an extension for the Tyson-Mayweather fight however the brief does not contemplate what happens if Tyson were to have had an injury which would force him out of a fight prior to a September fight with Pacquiao.
CSI Entertainment establishes the exclusivity agreements with Mayweather backed by advances which totaled at least $4.5 million. It notes, without context, that a March 2026 $150,000 “installment” was made to Mayweather after he passed medicals and then a day later made the announcement that he would fight in Greece in June 2026. Although CSI Entertainment attempted to discuss the implications with Mayweather and/or his representatives, he appeared at a press conference for the event in May 2026.
The news might indicate that Mayweather knew of Tyson’s injury which would delay a fight for the spring/summer of 2026 and instead of waiting wanted to fill a fight so he could earn a payday. We will see if Mayweather’s response identifies anything in the language which would preclude scheduling a fight in lieu of fighter injury.
There has been little in U.S. media promoting this fight this week. This might be due in part that the fight is in Greece and no major network or streaming service is picking it up. However, the legal conflict is another one this year for Mayweather. As is becoming more revealing, Mayweather seems to be in financial peril. The brief indicates that Mayweather allegedly mortgaged his cash advance for another $5.8 million loan. Unlike the White House lawsuit filed by two citizens to stop the UFC White House event, the plaintiff makes the case that it was not until last month that they were made aware of this fight taking place. Moreover, they make a good case that Mayweather breached the agreements as described by the plaintiffs. Like any other case, there’s another side to the story and we will see what Mayweather will argue. It is worthy to note that Mayweather has sued his promotional company for allegedly misdirecting funds out of his accounts. Thus, this may be a key issue in this whole contractual mess.
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