World Snooker Championship: Ronnie O’Sullivan quarrels with the referee during the final

Watch as six-time champion Ronnie O’Sullivan quarrels with referee Olivier Marteel in the final frame of the first session of the World Snooker Championship final.

Marteel gave O’Sullivan a formal warning for doing what he thought was an obscene gesture, prompting world number one to challenge the official to check the camera.

READ MORE: O’Sullivan leads the final, but quarrels with the referee

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