Ronnie O’Sullivan hit a new low by mocking………………………..

Ronnie O’Sullivan let himself down badly at the World Snooker Championship on Wednesday. And he did the sport no favours in the process.

Frankly, O’Sullivan’s behaviour during his quarter-final meeting with Stuart Bingham at the Crucible was beyond the pale.

It started in the afternoon’s second session of the match when he persistently asked one of the game’s top referees, Desislava Bozhilova, to keep respotting the black after he had potted it, with the ball appearing to be rolling off its spot.

In his view, the slight difference meant he was now not on a red that should have been portable.

Eventually, the ball did stick on the spot, with the red now being on, but an unsettled O’Sullivan elected not to go for the pot, playing safe instead.

This was hailed in some quarters as a great act of sportsmanship, but the jury is well and truly still out on that one and they won’t be returning for a decisive verdict any time soon.

All this was merely a warm-up. O’Sullivan’s real shows of petulance came in the evening.

First he appeared on a Eurosport interview shortly before play resumed for the final session, with the match score level at 8-8.

He was asked to explain the events surrounding that respotting and he wasn’t shy in being forthcoming.

‘To be honest with you, some of the referees, I think they’ve got it in for me. So I just wanted to prove (to) her that she got it wrong,’ he said.

‘And I thought, do you know what, I didn’t feel good about having to pot the ball after that. I just wanted to make the point. The point was made.

‘I’m not that hungry to win in that way. I’m more of a principles person. Once the principle has been made, I can sleep at night.’

My mind went straight away to that old Groucho Marx line: ‘Those are my principles, and if you don’t like them… well, I have others.’

But when the situation had been calmed and the door eventually closed, referee Bozhilova asked him to carry on.

He seemed reluctant, so she countered: ‘We might wait twenty minutes.’

Then came the reprehensible part of O’Sullivan’s behaviour. He told Bozhilova to ‘chill’ and accompanied it with a patronising hand gesture.

The official, who behaved with admirable dignity throughout, simply replied: ‘I’m chilled.’

As it happened, the door did briefly open once more for a few seconds, but the issue soon passed and all was quiet again.

And that is quite enough about the door from me. It’s not even really about the door.

At best, O’Sullivan came across as rude and condescending to the referee. At worst it bordered on being aggressive.

You just can’t behave like that in the middle of a sporting event that’s being shown to millions of television viewers around the world.

O’Sullivan is the greatest player to ever hold a cue. He’s brought untold numbers of people to the sport with his brilliance, indeed his genius.

But that doesn’t give him licence to behave in this way. It left a sour taste for so many of us watching on.

O’Sullivan has previous of course. Just two years ago, he picked an unseemly fight with referee Olivier Marteel during his world final against Judd Trump.

The referee on that occasion warned O’Sullivan for making what he believed to be an obscene gesture. O’Sullivan angrily pointed his finger at Marteel, saying: ‘Don’t start.’

That was a dreadful spectacle too, but O’Sullivan’s poor behaviour was lost in the enormity of him winning a seventh world title.

We all have moments we regret in life. None of us are saints. But equally, we all know deep down when we’ve gone too far.

O’Sullivan did that here, and some. Lest we forget how many sports fans would simply have been tuning in because it was O’Sullivan playing. In so many ways, he is still the sport’s figurehead. He set a very poor example again in Sheffield and many in the game are simply tiring of it.

It’s not as if O’Sullivan is some impressionable teenager any more, or even a man in his twenties or thirties. In fact, he turns 50 next year. Isn’t it time he simply grew up?