Wolves boss Gary O’Neil described the behaviour of Coventry counterpart Mark Robins “disgusting” after he celebrated his side’s remarkable FA Cup quarter-final win in the face of a 13-year-old ball boy.

The Championship outfit stunned their Premier League opponents with two goals in added time to seal a 3-2 victory and book a first semi-final in this competition since they won it in 1987.

It was after Haji Wright’s winner at the death that Robins showed a rare sight of emotion by celebrating in front of a ball boy, who had irked him moments before.

Robins offered an unprompted apology in his press conference after the game, but O’Neil said the teenager was left distressed.

“I was disappointed, I waited for Mark downstairs and spoke to him because I was really respectful at the end, having lost a massive game, waited for them to finish their celebrations, shook everyone’s hands, congratulated them on a real good performance, reaching Wembley and what a fantastic achievement it was,” O’Neil said.

“And he apologised, but to celebrate in a young boy’s face like that I thought was disgusting, the boy is really upset. It shouldn’t happen, but I don’t have too much to say about it because we have lost and it’s going to seem bitter.

“But I thought it was really important to speak to Mark about it because they are just kids doing a job.”

Robins was regretful afterwards and admitted to letting his emotions get the better of him.

He said: “I have an apology to make, before the winner went in, the ball boy has the ball, a young kid, so I am apologising to him, he has the ball in his hand, drops it and walks away smiling.

“It really annoyed me, but he’s a kid, at the end of the day I have reacted, we scored the goal and I went and celebrated in front of him.

“I apologise to him. I do not show emotion very often and before that happened I apologise to him, I don’t show emotion very often but that is what the FA Cup does to you. I apologise to him unreservedly to him.”

It is little surprise Robins was emotional given the manner of an unbelievable climax at Molineux.

It looked like they would be leaving with broken hearts after two goals in the final 10 minutes from Rayan Ait-Nouri and Hugo Bueno overturned Ellis Simms’ opener and seemed to set a Wembley date for Wolves.

But the Sky Blues were not done and in nine minutes of time added on they turned the last-eight tie around again, with Simms grabbing a second and then Wright earning himself folklore by grabbing the winner.

They are into just a second semi-final in this competition, with the last one coming en route to lifting the cup 37 years ago.

With some of the teams still left in this year’s edition, Robins is not overly optimistic of a repeat of that famous win over Tottenham.

Asked if he thought they could win the competition, Robins said: “Did you say win the competition? You do realise who is left in?

“Well, we have got a small chance. We are going to Wembley and we are going to enjoy that game, I don’t want to go there and just make the numbers up. We know, are not stupid, the levels go up all of the time.”

Coventry stunned Premier League Wolves with two goals in injury time to seal an amazing 3-2 win and book a first FA Cup semi-final appearance since 1987.

The Sky Blues went on to win the competition that year in one of the most famous finals ever and they kept their hopes of another unlikely triumph this season alive after a remarkable climax at Molineux.

It looked like they would be leaving with broken hearts after two goals in the final 10 minutes from Rayan Ait-Nouri and Hugo Bueno overturned Ellis Simms’ opener and seemed to set a Wembley date for Wolves.

But the Championship side were not done and in nine minutes of time added on they turned the quarter-final tie around again, with Simms grabbing a second and then Haji Wright earning himself folklore by grabbing the winner.

It was a dramatic ending to a breathless derby, which the Championship side probably deserved to win.

Coventry survived a couple of early scares as Mario Lemina and Nelson Semedo missed chances, but having absorbed the pressure, the visitors missed a golden chance of their own to go ahead and Simms will not want reminding of it.

After Jose Sa had palmed Kasey Palmer’s shot into the path of Jake Bidwell, the wing-back set up a simple tap-in from close range after rolling the ball across goal, but Simms got his feet in a mess and somehow put his shot straight at Sa.

The momentum had suddenly switched and two more glorious chance came for Coventry before half-time as Simms played in Milan van Ewijk, who looked prime to score until Sa made a fine block and the Wolves keeper was grateful to an unmarked Palmer for cushioning the ball straight at him.

The Sky Blues finally made the breakthrough eight minutes after the restart as Simms made amends for his earlier howler.

Liam Kitching headed a free-kick back across goal to the far post where Simms appeared to bundle the ball in with his arm.

But it survived a lengthy four-minute VAR check to give the travelling supporters a second chance to celebrate.

They should have been celebrating another goal soon after as their side bombarded Wolves’ goal.

Sa had to make a double save, first keeping out Wright’s effort with his feet and then parrying away Josh Eccles’ effort from the rebound.

After Sa then rolled the ball to Matt Doherty, the Republic of Ireland wing-back was dispossessed in a dangerous area and Palmer put a shot agonisingly wide.

They could have done with one of those chances going in as the inevitable Wolves onslaught came in the final 20 minutes.

Joao Gomes saw a vicious effort tipped onto the post by Bradley Collins and then Ait-Nouri hit the other post with a header soon after.

But Wolves remained ragged at the other end and only a one-man show from Sa stopped Coventry from killing the tie.

The Portugal keeper pulled off three big saves to keep the score at 1-0, palming away efforts from Simms and Callum O’Hare and then denying Kitching at close range.

And he was rewarded as Wolves levelled in the 83rd minute when Joel Latibeaudiere could not clear a cross and Ait-Nouri slammed home the loose ball.

The writing appeared on the wall for Coventry as Ait-Nouri surged forward, playing in Bueno, who made no mistake.

But in the sixth minute of time added on Simms headed home at the far post after Bobby Thomas had flicked on Bidwell’s cross.

There was time for more drama as in the 10th minute Simms teed up Wright to steer Coventry to a famous victory.

Liverpool’s late show fired Jurgen Klopp’s men to the top of the Premier League with a 3-1 comeback win at Wolves.

Andrew Robertson and Hugo Bueno’s own goal saw the Reds escape Molineux with a victory which looked unlikely at half-time.

Hwang Hee-Chan’s early opener gave Wolves the lead as the hosts dominated and only a woeful miss by Matheus Cunha stopped them going further ahead.

Liverpool were wretched in the first half but slowly improved, levelling through Cody Gakpo before breaking Wolves’ resistance with four minutes left for a third comeback win of the season.

Boss Klopp had unloaded a new blast at the fixture schedule ahead of the early kick-off and his mood would have darkened just seven minutes in.

Vibrant Wolves had already begun to stretch Liverpool before they broke at pace from the edge of their own area.

Cunha sent Pedro Neto scampering down the left and the forward glided past the flimsy Dominik Szoboszlai and Joel Matip.

He had little support but rolled the ball across the front of goal for Hwang to slide in at the far post as Alisson failed to make the ground.

Manager Gary O’Neil promised Wolves had a plan to be aggressive and they continued to press with debutant Jean-Ricner Bellegarde a bustling presence, in contrast to the sloppy £60m Szoboszlai.

Neto was a constant menace, steering over Nelson Semedo’s cross before firing wide from 20 yards, with Liverpool shellshocked and unable to find rhythm.

If Klopp, who patrolled his technical area with typical gusto, expected a response he was found wanting. Gakpo was anonymous, Mo Salah timid and Diego Jota wasted their only opening of the half, firing over from 15 yards.

While masterminding Bournemouth’s escape from relegation last season, O’Neil oversaw a 1-0 win against Liverpool and the boss believes the Reds will challenge for the title again.

After three wins from their opening four games, he expected to see an improved Liverpool at Molineux yet for spells it was one-way traffic as Wolves dominated and should have doubled their lead after 33 minutes.

Again Neto was the architect, bamboozling Joe Gomez to cross for an unmarked Cunha, only for the striker to completely mistime his header from five yards to let Liverpool off the hook.

It was a glaring miss but the pedestrian Reds were unable to take immediate advantage, Gakpo slicing wide and nodding over.

There was, at least, a small spark from Liverpool before the break when Jose Sa spilled Jota’s cross to Salah, whose shot was blocked, with Sa then saving Szoboszlai’s follow up.

The fear for Wolves was Liverpool would not be that passive in the second half and Klopp responded by introducing Luis Diaz for Alexis Mac Allister.

It almost paid off immediately when the forward headed Robertson’s cross inches wide 90 seconds after the re-start – and the visitors levelled 10 minutes later.

Wolves were unable to rob Diaz and Gakpo on the edge of the box, with the ball eventually rolling for Salah to cross low for Gakpo to tap in from close range.

It was the striker’s final touch, Darwin Nunez replacing him, while Wolves’ good work was in the process of being completely undone.

From being in charge, the hosts had their backs to the wall and only a last-ditch block from Max Kilman stopped Nunez snatching the lead.

Yet the Reds struck with four minutes left after Sa gifted them a second.

The goalkeeper’s poor clearance was collected by Robertson mid-way inside the Wolves half. He advanced to dart into the area, swapped passes with Salah and finish under Sa.

There was still time for a third in stoppage time when Elliott’s 20-yard drive clipped Bueno to wrongfoot Sa and roll in off the post.