'I'm proud of him' - Dorgu's display of sportsmanship

It was a remarkable display of sportsmanship.

With Manchester United leading their Europa League last-16 tie with Real Sociedad 2-1 on the night and 3-2 on aggregate, the Red Devils were awarded a penalty.

It was their third spot-kick of the match and came as referee Benoit Bastien felt Patrick Dorgu had been brought down by Hamari Traore.

But, as the challenge was being checked by the video assistant referee (VAR), Dorgu opted to try to overturn the decision himself.

The 20-year-old could be seen gesturing to the referee that it was not a foul - and VAR agreed, revoking the penalty.

United still progressed to the quarter-finals, scoring twice more to progress 5-2 on aggregate, but it was nevertheless an impressive act of honesty by Dorgu.

"It's a good thing," said United boss Ruben Amorim. "I'm proud of him. I cannot say if it's 0-0 or [we are] losing if I have the same response."

Football is a highly charged and competitive game, but there have been plenty of incidents in the past where sportsmanship overcomes the desire to win at any cost.

Here BBC Sport takes a look at some of the best examples from the past.

In a similar incident to Dorgu at Old Trafford on Thursday, Liverpool striker Robbie Fowler once told the referee not to award his side a penalty against Arsenal.

It happened in 1997 when Fowler went down inside the box under a challenge from David Seaman and referee Gerald Ashby pointed to the spot.

However, Fowler himself argued against the decision, waving his hands towards the referee in protest.

Despite that, Ashby stood by his decision and, interestingly, Fowler stepped up to take the penalty. His effort was tame and kept out by Seaman but Jason McAteer was there to put in the loose ball.

Despite that, Fowler was awarded a commendation by Uefa for his honesty.

In 1999, an FA Cup fifth-round tie between second-tier Sheffield United and Arsene Wenger's Arsenal was delicately poised at 1-1.

After Blades forward Lee Morris went down injured, his goalkeeper Alan Kelly threw the ball out of play so he could receive treatment.

Though not a requirement by the laws of game, such situations have traditionally seen the opposition players return the ball.

And that is what Ray Parlour attempted to do - but Arsenal new boy Nwankwo Kanu, unfamiliar with the custom, instead raced on to the throw-in and squared for Marc Overmars to score.

The game ended 2-1 to the Gunners and, in the post-match news conference, their manager Wenger offered a rematch in the interests of fair play.

That took place 10 days later, with the game again finishing 2-1 to Arsenal.

West Ham striker Paolo di Canio won a Fifa fair play award after his sporting gesture during his side's Premier League game at Everton in December 2000.

Everton goalkeeper Paul Gerrard had left an open goal after he rushed out of his area to make a challenge and fell to the ground injured.

As a cross came in, Di Canio caught the ball to stop play rather than shoot towards the empty net, earning him a standing ovation from the Goodison Park crowd.

In 2007, Leicester players stood aside to allow Nottingham Forest to score a "free goal" in a League Cup rematch.

The first game was abandoned when Forest were winning 1-0 after one of their players - Clive Clarke - collapsed.

When the game was replayed, Leicester wanted things to be fair, so let Forest goalkeeper Paul Smith walk down the pitch unopposed to make it 1-0 again. The Foxes went on to win 3-2.

Miroslav Klose was one of the deadliest goalscorers of the 21st Century, but was an incredibly honest player to boot.

The Germany striker was playing for Lazio in 2012 and in a game against Napoli he he gave his side the lead after just three minutes, appearing to head home from a corner.

The Napoli players protested heavily, with replays showing Klose had actually turned the ball into the net with his hand.

Klose explained that to the referee and the decision to award the goal was rescinded.