Floyd Mayweather sued over Tyson, Pacquiao fight agreements

Floyd Mayweather faces a federal lawsuit over alleged contract violations tied to planned bouts against Mike Tyson and Manny Pacquiao, with the promoter seeking to halt his scheduled June 27 fight in Greece.

CSI Sports Events filed the complaint Thursday in the Southern District of New York, claiming Mayweather breached exclusive agreements when he signed to face Mike Zambidis in Greece next weekend, ESPN reports. The company contracted to produce a Mayweather-Tyson exhibition set for spring 2026 and a professional return against Pacquiao later this year. CSI is pursuing $6.65 million in damages and wants a permanent injunction blocking the Zambidis bout.

Competing agreements over Pacquiao fight fuel dispute

According to the filing, CSI agreed in August 2025 to pay Mayweather $14 million for the Tyson fight, including a $2 million advance. A separate November 2025 deal promised $35 million for a Pacquiao matchup with 20 percent of pay-per-view revenue, or a $50 million buyout if the fight did not land on PPV. The suit alleges Mayweather then struck a December 2025 deal with EverWonder to fight Pacquiao on Netflix for $24.75 million. CSI and EverWonder attempted to resolve the overlap, with CSI set to receive full billing rights for a fall Sphere event, but the lawsuit claims Frist Apex Ventures never repaid an advance as required.

"We were prepared to go forward," CSI attorney Judd Burstein told ESPN. "Tyson would go first and CSI would allow, Pacquiao was going to go forward in the fall in the Sphere televised by Netflix with CSI getting full billing rights." The suit claims Mayweather then announced the Zambidis fight without CSI consent, violating exclusive rights to his return bout. When Tyson postponed the scheduled May 30 date with a hand injury, the Zambidis fight became Mayweather's comeback, which CSI says breaches their contract window. Mayweather attempted to terminate the CSI deal on June 9.

The lawsuit adds to mounting legal troubles for Mayweather, who faces two felony charges in Las Vegas over an allegedly bad check for a $200,000 watch and civil suits in four states. He also carries a $7.2 million IRS lien for unpaid taxes. As a plaintiff, Mayweather is suing Showtime for $340 million and Frist Apex for $175 million over fraud claims. Burstein said CSI plans to file an emergency injunction application in federal court ahead of the June 27 bout.

Source: espn.com