Curtis “50 Cent” Jackson has taken aim at Floyd Mayweather Jr. once again, this time over the boxing legend’s $340 million lawsuit against Showtime.

Yahoo News on Thursday reported that the suit, filed on Tuesday in California state court, claims Showtime — now owned by Paramount CBS — and former Showtime Sports president, Stephen Espinoza, participated in “a long-running and elaborate scheme of financial fraud” that diverted millions owed to Mayweather into accounts controlled by his former manager Al Haymon.

The complaint alleges that money from high-profile fights, including bouts with Manny Pacquiao and Conor McGregor, was misappropriated.

Surprisingly, Haymon is not named as a defendant.

Mayweather’s attorney

Mayweather’s attorney, Bobby Samini, said, “Floyd is one of boxing’s biggest pay-per-view draws. He generated hundreds of millions of dollars in revenue for Showtime. Mr. Mayweather now takes this fight to the courtroom to recover what he rightfully earned. Retiring undefeated at 50-0, Mr. Mayweather will go the distance in the courtroom just as he has in the ring.”

Paramount, the parent company for Showtime, vehemently rejected the claims.

A spokesperson told The Hollywood Reporter, “These baseless claims lack legal or factual merit. We strongly reject them and will respond accordingly through the court process.”

Mayweather, 48, is widely regarded as one of the greatest boxers in history. Known for his defensive mastery, technical precision, and undefeated record, he won world championships across five weight classes and headlined some of the most lucrative pay-per-view events ever.

Despite retiring from professional boxing, he continues to participate in exhibition bouts, including a proposed fight with former heavyweight champion Mike Tyson, originally scheduled for spring 2026. Tyson, 59, boldly predicted, “He’s going to get knocked out,” in a recent interview.

Into this legal drama stepped 50 Cent, who has a long-standing, often contentious relationship with Mayweather.

50 Cent mock

Jackson mocked the boxer on Instagram Wednesday, writing: “Oh no don’t cry now champ, they beat you out of $320 million, you dxmbaxs. I told you let me read the contracts. Now lace up, you gotta look good fighting Mike. Then maybe we can get Bud to beat your ass for some big money.”

The jab harkens back to 2014, when 50 Cent challenged Mayweather to read a page of The Cat in the Hat or Harry Potter before donating $750,000 to one of the boxer’s charities.

Fans reacted swiftly on social media. Rapper Bow Wow left a skull emoji, while another fan commented, “50 will never let his opps get a pass,” highlighting 50 Cent’s relentless trolling style.

The feud between 50 Cent and Mayweather stretches back to the 2000s, with a financial dispute in 2012 driving a wedge between the former friends.

Over the years, 50 Cent has repeatedly claimed he was instrumental in Mayweather’s “Money” years and even influenced UFC CEO Dana White to back the Mayweather vs. McGregor superfight.

Mayweather’s lawsuit

Mayweather’s lawsuit highlights that even one of the most financially successful athletes in modern sports — reported to have earned around $1.2 billion in fight purses — may still face disputes over earnings.

The California complaint claims that nearly 40 percent of his career earnings is unaccounted for due to opaque bookkeeping practices during his Showtime contract, which ran from 2013 to 2015.

That deal included nine-figure payouts for fights against Canelo Alvarez, Manny Pacquiao, and others, with the Pacquiao fight alone generating $410 million in revenue.

While the courtroom battle unfolds, 50 Cent continues to taunt and tease, suggesting Mayweather may need to step back into the ring — not just against Tyson, but possibly against Terence “Bud” Crawford — to recoup his alleged losses.

Whether in the ring or the courtroom, one thing remains certain: the drama surrounding “Money” Mayweather shows no signs of slowing down.