What is an example of a clean fighter using a rough house tactic?

Wlad was generally a clean fighter but he threw the world's worst headbutt against Fury

 

It's usually called framing.

 

Thats like saying your favourite fight to rematch is Lewis vs Henry Akinwande or Adrien Broner vs Shaun Porter. The exact same illegal octopus tactics display in all 3

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When Manny Pacquaia double fisted Joshua Clottey

 

Reminded me of this.

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There are levels to the game. And the difference between the levels reveals where the genius lies.

 

Love Earnie Shavers but he was well practiced at holding the back of an opponent's head to keep it in place for his monstrous uppercuts.

For all his whining about perceived infringements committed against him by certain opponents, Jimmy Young did quite a few things that weren't strictly kosher.