Thursday, June 4, 2026

Legal Dispute Brewing Between UFC And Anti-Doping Agency

  • MMA property threatens action against USADA, creates new drug-testing program
  • Public disclosure of McGregor re-entering testing pool sparks rebuke
Gary A. Vasquez-USA TODAY Sports

UFC’s next big fight may be outside the Octagon as it escalates a bitter rift with a leading anti-doping agency.

The MMA property is creating its own drug-testing program and threatening legal action against the U.S. Anti-Doping Agency after the latter claimed UFC did “an about-face” on the status of Conor McGregor, as well as on their future relationship.

USADA has said that McGregor, like any other fighter, must spend six months in a drug-testing pool and pass two tests before competing. Having been out of the pool since 2021, he made his reentry on Sunday. McGregor was previously expected to fight in December, but his status has been in question because of the testing rules.

“We do not currently know whether UFC will ultimately honor the six-month-or-longer requirement,” the agency said. “The UFC’s move imperils the immense progress made within the sport under USADA’s leadership.”

That prompted an angry reply from UFC, which objected to both the public announcement of McGregor’s entering the testing pool — something not normally done in order to protect athletes’ privacy — and the attacks on its organizational credibility. UFC also insisted that McGregor won’t be fighting until next year.

“It was a dirty move by them,” UFC president Dana White said of USADA on “The Pat McAfee Show.” “That was straight scumbag-ism what happened. … The you-know-what is about to hit the fan on that one.”

The property will begin working with Drug Free Sport International in January, when its current USADA deal ends.

Defying a UFC request for a public retraction and apology, USADA responded that it “stands by our statement and our credibility.”

This field is for validation purposes and should be left unchanged.

Sign up for
The Memo Newsletter

Get the biggest stories and best analysis on the business of sports delivered to your inbox twice every weekday and twice on weekends.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Linkedin
Whatsapp
Copy Link
Link Copied
Link Copied

What to Read

May 16, 2026; Los Angeles, California, USA; Ronda Rousey (blue gloves) celebrates defeating Gina Carano (red gloves) after a women's featherweight bout at Intuit Dome. Mandatory Credit: Jayne Kamin-Oncea-Imagn Images

How Jake Paul’s MVP Plans to Build on Netflix MMA Debut

Saturday’s debut averaged 12.4 million viewers on Netflix.
Jul 10, 2021; Las Vegas, Nevada, USA; Conor McGregor fights Dustin Poirier during UFC 264 at T-Mobile Arena. Mandatory Credit: Gary A. Vasquez-USA TODAY Sports

Conor McGregor Set for First UFC Fight in 5 Years

McGregor lost his last two fights, which each occurred in 2021.
WWE NXT
exclusive

WWE Moving 20 NXT Premium Live Events to The CW

The deal includes 20 events over the next several years.
exclusive

Caleb Williams Didn’t Mean to Start an ‘Iceman’ Fight

“It’s all respect” to NBA legend George “Iceman” Gervin, Williams told FOS.

Featured Today

FILE PHOTO: Soccer Football - FIFA World Cup - UEFA Qualifiers - Group A - Germany v Luxembourg - Rhein-Neckar-Arena, Sinsheim, Germany - October 10, 2025 Germany coach Julian Nagelsmann

‘Weird Corners of the World’: How to Find a World Cup Coach

National associations look for a winning record—and also hope for serendipity.
June 3, 2026

The Elite High Schools Hosting World Cup Teams

Spain, Morocco, Croatia, and Switzerland chose schools as their tournament base camps.
Frances Cabral-Delaney
May 29, 2026

How Arsenal Fandom Went ‘Manic’

“People do not become Arsenal fans because it’s easy,” says Zohran Mamdani.
May 23, 2026; Anaheim, California, USA; Fans participate in a tarp off during a MLB game between the Los Angeles Angels and the Texas Rangers at Angel Stadium
May 28, 2026

‘Tarps Off’: How Shirtless Fans Took Over MLB

The viral movement began with the SFA club baseball team.

Chwalińska Makes French Open Final, Nearly Triples Career Earnings

Chwalińska was ranked No. 114 before the French Open began.
Mar 30, 2026; Phoenix, AZ, USA; NFL commissioner Roger Goodell arrives during the 2026 NFL Annual League Meeting at the Arizona Biltmore.
June 4, 2026

NFL Defends TV Deals As Goodell Declines to Testify Before Congress

The league continues to tout its commitment to broadcast television.
June 4, 2026

MLB’s Long-Stalled Stadium Plans—Rays and A’s—Show Progress

The A’s and Rays both are drawing closer to getting new ballparks.
Sponsored

Landon Donovan: What Soccer in America Still Needs

Landon Donovan discusses the evolution of soccer in America and investing in the NWSL.
SEA at VAN - Nov. 21, 20251
June 4, 2026

Will the PWHL’s Aggressive Expansion Succeed?

The league added four teams ahead of the 2026–27 season.
June 3, 2026

Adam Silver: NBA Europe ‘On Track’ to Launch Next Year

The commissioner also commented on the Aspiration investigation.
June 3, 2026

MLB Owners Hold Firm On Salary Cap, Cite ‘Failure’ With Luxury Tax

Rising willingness by teams to pay the tax prompts a new approach.
June 3, 2026

WNBA Player Drops Out of Project B to Play in Turkey

Project B also signed another French player: Leïla Lacan.