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Diary of a CEO · 2025-06-26 · 2h 11m

Tom Aspinall Opens Up About Brain Damage & His Future In the UFC

UFC heavyweight champion Tom Aspinall on fear, brain damage, near-quitting in poverty, John Jones, and raising an autistic son.

Tom Aspinall Opens Up About Brain Damage & His Future In the UFC
The guest

Tom Aspinall — British mixed martial artist and the UFC's undisputed heavyweight champion of the world, the first ever British UFC heavyweight champion. Known for finishing fights in record-fast time.

The gist

Tom Aspinall talks through his improbable rise from a blue-collar Greater Manchester town to UFC heavyweight champion, a 20-plus-year grind he calls an overnight success that took decades. He opens up about the financial desperation of having three kids by 25 with no money, the career-threatening knee injury that became his biggest turning point, and the role of fear, visualization and hypnotherapy in his mental game. A long section covers the John Jones saga and Jones's retirement that handed Aspinall the undisputed belt. He also speaks candidly about anxiety, OCD, the toll of the sport, and the struggle to get his autistic son diagnosed in the UK.

Big reveals

  • Says he is scared to fight everybody and that fear now fuels rather than hinders him.
  • Claims he beat John Jones without fighting him by forcing him into retirement.
  • Recalls borrowing money from friends and his dad to buy nappies and fuel while broke with three kids.
  • Reveals he fought in the UFC with one bad knee, training with effectively one leg for a long time.
  • His knee gave out in front of 25,000 fans at a London title eliminator, the most devastating moment of his career.
  • Shares that one of his twin sons is autistic and that he paid privately for the diagnosis the NHS waiting list couldn't deliver.
  • Explains his calm cage demeanor is by design, copied from GSP: fake-smiling so his mind follows his body.
  • The handoff question 'Why don't you work harder?' was left by Mr Beast.

Things worth remembering

  • His first pro fight paid just 200 quid; as an amateur he made 50 to 100 quid a fight.
  • He holds the UFC record for the lowest average fight time, finishing opponents in roughly two minutes.
  • New UFC fighters typically start on 'show money' of 10 to 15k dollars with a win bonus roughly double that.
  • His first six-figure payday only came at age 30 against Sergei Pavlovich in late 2023.
  • He estimates 95% of MMA fighters have never made more than five grand for a fight.
  • He does hypnotherapy and is increasing it to twice a week to manage anxiety and sleep.
  • Cites 700,000 autistic adults and children in the UK and a 787% rise in diagnoses over two decades.
  • The real championship belt reportedly costs about 300 grand and he must personally pay if it goes missing.
  • Argues training is 80% physical but fight night flips to 80%-plus mental.
  • Aims to spend half his training time on recovery (two hours recovery per four hours training).