An MMA fighter was DQ'd from a Cage Warriors title fight because he wouldn't stop headbutting his opponent

• Jack Cartwright retained his Cage Warriors title Friday after his opponent was disqualified.
• Though Sylwester Miller was competitive in the fight, he wouldn't stop headbutting Cartwright.
• Eventually the referee had had enough, and kicked the Polish fighter out of the bout.

An MMA fighter was disqualified from a Cage Warriors title fight because he wouldn't stop headbutting his opponent.

Polish bantamweight challenger Sylwester Miller was kicked out of Friday night's title fight with champion Jack Cartwright, allowing the Brit to advance his undefeated MMA record during the second of three consecutive Cage Warriors events in London.

Miller was warned about the illegal strikes but continued to throw them anyway and was subsequently thrown out of the CW 121 fight, which was the penultimate bout on a seven-fight card.

What made the infractions all the more bewildering was that Miller was actually having success in the fight via his merciless ground-and-pound technique.

While in top position, though, he repeatedly rammed his forehead onto Cartwright's face.

The first headbutt seemed to happen in the second round, but he threw another in the third, before a final one in the fourth.

Watch the referee warn Miller about headbutts in the third round:

And see him get disqualified in the fourth:

Having already warned Miller, the referee Rich Mitchell stopped the action, issued a disqualification to the Polish submission specialist, and gave Cartwright the win.

Cartwright retained his Cage Warriors bantamweight title with the victory. His record now stands at 10 wins (three knockouts, five submissions, one decision, and one other) and is unbeaten so far.