Former UFC middleweight champion Sean Strickland has launched a critique on veteran coach Din Thomas following his handling of Gillian Robertson’s title challenge loss at UFC 330.
The controversy erupted after Thomas announced his retirement from cornering athletes immediately following Robertson’s unanimous decision defeat to strawweight champion Mackenzie Dern.
In a now-viral moment captured on video, Thomas declared his departure from the corner was directly tied to Robertson’s performance, stating “this might be as far as she can go.”
Thomas explained that he believed Robertson may have reached her ceiling in the sport, before announcing that he was retiring from cornering athletes.
“I think this might be as far as she can go, and I am officially retiring from cornering figh ters tonight,” Thomas said. He then added, “I’m doing the Matt Serra. I’m not cornering figh ters at all.”
When asked why he had made that decision, Thomas explained that he had always intended to see Robertson’s journey through and help take her as far as he believed she could go.
“I told myself that I would do this with her, see her journey out, and take her as far as I think she can go,” Thomas said. “And this might be as far as she can go.”
Strickland took immediate issue with Thomas publicly criticizing his fig hter in what the middleweight contender viewed as a moment when she needed support most.
“Din Thomas is a f*cking c*nt,” Strickland wrote on X, formerly Twitter. “I’ve had my a*s kicked in multiple weight classes through my career and won two titles. You’re a d*ck head. It’s probably better you retire. You’re a sh*t coach.”
The outburst continued with Strickland articulating a philosophy that directly challenged Thomas’s apparent assessment of Robertson’s ceiling in the sport. “You only lose when you quit. Din sounds like you’re a f**king loser.”

When one user defended Thomas as “a legend in this sport,” questioning the intensity of the backlash, Strickland doubled down on his position.
“He’s just a c*nt,” Strickland responded. “Girl goes out there and tries to do something and you put her down. D*ck head.”

The timing of Thomas’s announcement has drawn particular scrutiny. Between the first and second rounds of the championship bout, Thomas delivered blunt instructions to Robertson, repeatedly telling her “I need you to wake the f*ck up” as she trailed on the scorecards.
Despite showing resilience and winning the final round, Robertson was unable to overcome the champion’s grappling dominance and lost by scores of 49-46, 49-46, and 48-47.
For Thomas to announce his retirement from cornering immediately after the loss, while explicitly linking it to Robertson’s performance and potential, struck many as an unusually public way to process the defeat.