In a surprising twist, professional boxer Nate Diaz has taken legal action against Fanmio promoter Solomon Engel, alleging that he has not received the massive $9 million purse promised for his recent boxing match with former UFC rival Jorge Masvidal. Diaz, who recently made headlines with his victory over Tony Ferguson in UFC 279, debuted in the world of professional boxing last year with a decision loss to Jake Paul.

The highly-anticipated rematch between Diaz and Masvidal took place earlier this month, serving as a continuation of their "BMF" title bout at UFC 244. Despite Diaz's unanimous decision-win, the 39-year-old athlete claims that he has yet to receive proper compensation for his participation in the bout, as stated in his pre-fight contract with Fanmio promoter Solomon Engel.

According to a report from TMZ Sports, Diaz had a clear agreement in place with Engel, which stipulated that he would be paid a staggering $9 million for taking part in the boxing match against Masvidal on July 6th. However, Engel informed Diaz after the fight that he would be unable to fulfill the promised payment due to the event falling short of expectations.

In response, Diaz has taken legal action, filing a lawsuit against Engel, citing fraud and breach of contract. This unexpected turn of events casts a shadow of uncertainty on Diaz's post-UFC career aspirations, as he strives to maximize his opportunities outside of the octagon.

Despite the lawsuit, Diaz remains a sought-after competitor, with several active UFC fighters expressing their interest in facing him in the ring. Regardless of the outcome of the legal proceedings, Diaz's future in professional boxing looks promising, and he is expected to explore a range of options for his next outing.

As Diaz's legal battle unfolds, the sports world will be watching closely to see how this dispute resolves and what it means for the rising star's future in the boxing ring.