Spain defender Cesar Azpilicueta:"Boy, we had to suffer there. It's been a few tournaments since we went through a knockout match. But today we 'broke the ice' against the World Cup runners-up. It wasn't great to be scored against twice late in normal time, but we were the better team in extra time and we deserve to go through."
Former England striker Ian Wright, speaking on ITV: "Spain are great to watch. And considering that everyone is going into the tournament talking about the chances they are missing, you just have to think about what they will do once they start taking their chances.
"It was a fantastic goal by Morata. It was one of those kind of goals you feel a bit of redemption for him. It wasn't an easy take. It was a fantastic ball over to him. Brilliant touch and a super finish from him. It is a lot harder than the chance he missed.
"It was at a time when they really needed that, if he misses that, you really would start to feel for him but it was a great, great finish.
"The goalkeeper deserves a lot of credit, he showed a lot of mental strength in this game."
Croatia's Mislav Orsic: "I would like to thank the fans – it was a pleasure to play in front of them. We fought until the very end, but they scored from almost every chance and deservedly won."