Who Is Justin Gaethje's Coach? Meet Trevor Wittman, the Mastermind Behind "The Highlight"
Trevor Wittman is a 3-time MMA Coach of the Year, former boxer, and founder of ONX Sports. If you've watched Gaethje compete in the UFC, you've seen Wittman's work: in the footwork, the timing, the disciplined aggression that makes Gaethje a problem for anyone who fights in UFC’s Lightweight Division.
Their partnership spans more than a decade and has produced some of the most memorable performances in recent UFC history.
From Brawler to Contender
Early in his career, Gaethje was chaos personified. Relentless pressure, devastating leg kicks, a willingness to trade that made every fight feel like a war.
Fans loved it. But Wittman recognized that lasting at the championship level requires something beyond a high pain tolerance.
Rather than scrapping what made Gaethje dangerous, he built around it. Tightened the striking mechanics. Added defensive awareness. Developed footwork and positional discipline without killing the aggression that makes Gaethje worth watching.
The result was a fighter who could do more than survive firefights; he could engineer them.
How Wittman Coaches
The mental framework Wittman installs matters as much as the technical work.
One principle runs through everything: stay in the round you're actually in. Too many fighters spend rounds worrying about what comes next instead of solving the problem in front of them. Wittman cuts that out. Make the adjustment. Solve it now. Repeat.
Confidence gets the same practical treatment. It isn't built during fight week; it's built in training camp, through preparation and the hard moments fighters push through in the gym. By the time a fighter walks to the cage, the confidence is either there or it isn't. Nothing is manufactured at that point.
Fear gets addressed too. Not eliminated; that's not how it works. Wittman teaches fighters to acknowledge it and compete anyway. Discomfort is part of the deal. Performance despite discomfort is the job.
The Fighters He's Developed
Gaethje is the most recognizable name on the list, but Wittman has been developing champions across weight classes for over 25 years:
- Justin Gaethje
- Rose Namajunas
- Kamaru Usman
- Shane Carwin
The range across different fighting styles and divisions is what earned him multiple MMA Coach of the Year awards. He isn't a one-style specialist.
UFC Freedom 250
The clearest recent evidence of Wittman's coaching came at UFC Freedom 250, held on the South Lawn of the White House to mark the 250th anniversary of the Declaration of Independence.
Gaethje entered as the underdog against undefeated champion Ilia Topuria. Most analysts picked Topuria. The game plan Wittman built was built around movement, angles, high kicks, and disrupting Topuria's rhythm before he could settle into his own fight.
After weathering the early rounds, Gaethje rallied and forced the stoppage, capturing the undisputed UFC Lightweight Championship.
The strategy wasn't complicated in concept: control the position, disrupt the rhythm, trust the preparation. The execution is where it gets hard. That's what years of coaching buys.
ONX Sports
After decades in combat sports, Wittman started paying close attention to where training injuries actually came from. A lot of them weren't from competition. They were from equipment that wasn't designed well enough.
He built ONX Sports to fix that.
The gear ONX produces runs on the same principles Wittman applies in the corner: performance, protection, and keeping athletes in the gym long enough to get good. Patented wrist-support technology. Products designed to reduce the injuries that end training sessions early and careers prematurely.
For Wittman, protecting fighters isn't separate from developing them. It's the same work.
Frequently Asked Questions
Q. Who is Justin Gaethje's coach?
A. Trevor Wittman, a 3-time MMA Coach of the Year and founder of ONX Sports.
Q. How long has Trevor Wittman coached Justin Gaethje?
A. Throughout Gaethje's professional career, starting during his time in the World Series of Fighting and continuing through his UFC run.
Q. What other fighters has Trevor Wittman coached?
A. Rose Namajunas, Kamaru Usman, Shane Carwin, and numerous other UFC fighters and contenders.
Q. What is Trevor Wittman known for?
A. Striking expertise, championship-level game planning, developing fighters across multiple weight classes, elite level fundamentals, and founding ONX Sports.
Q. Is Trevor Wittman the founder of ONX Sports?
A. Yes. He founded ONX Sports to build safer, higher-performing combat sports equipment based on what he learned as a fighter and coach.
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