Nani ruining one of Cristiano Ronaldo's greatest ever goals is still so tough to watch

One of Cristiano Ronaldo's angriest moments came when Nani caused his stunning solo goal to be disallowed back in 2010.

Ronaldo had already started to wheel away in celebration but just as the ball was about to drop into the back of the net, Nani came from out of nowhere and headed it in on the line.

The problem was that Nani was deemed to be offside and so the goal was chalked off.

'CR7' was absolutely incensed, well and truly throwing his toys out of the pram and even hurling his captain's armband on the turf.

Nani, gutted that he'd ruined Ronaldo's unbelievable piece of play, felt he needed to apologise after the game.

"After having time to think about it I apologised to Ronaldo. It was a great piece of play and I shouldn't have ruined it."

Ronaldo, however, vented his fury at the officials instead of Nani as he felt the ball had already crossed the line.

Speaking to Marca, he said: "I don't understand, even a blind man could see it was a goal. The ball was half a metre into the net."

"I don't know if it's a coincidence or not but my best goals with the national team are being disallowed. I remember an overhead kick in the Bessa stadium which wasn't given."

The decision didn't prove costly in the end as Portugal thrashed world champions Spain 4-0 but we reckon Nani still feels guilty he denied Ronaldo one of his greatest ever goals.