Semi-final matches identified other 2 semi-finalists  in UEFA Champions League. 

England derby Manchester City and Tottenham scored 4 goals in first 15 minutes. 2-2 score was broken in 21st minute by Sterling. 

First half was ended with 3-2 score. In the second half, Aguero made a score 4-2 after Lloris's unforgettable mistake 2 who should save his near corner. 

VAR technology proved Fernando Llorente's goal which was difficult to see that goal was score with hand or knee. After watching, Referee Cuneyt Cakir identified it was not handball. 

As a result, Tottehnam won on away goals in aggregation score 4-4. 

Tottenham coach Pochettino: “Football is unpredictable. The way Ajax play, I predict that it’s going to be an open game, very offensive game, very exciting game. It’s going to be a fantastic two legs. It was unbelievable to be in the Champions League quarter-finals playing against Manchester City and beat them. It was very competitive in both legs. Both games were even. To score three goals here against Manchester City is not easy. The most important thing now is that we are in the semi-final. We deserve to be in the semi-final. My players are heroes. After qualifying for the semi-finals and making history, I am more than happy and more than proud for them."

Manchester City manager Pep Guardiola: "It is cruel but it is what it is and we have to accept it.  I am so proud of the players and the fans. I have never heard noise like that since I have been in Manchester but football is unpredictable.Unfortunately, it was a bad end for us so congratulations to Tottenham and good luck for the semi-finals. I support VAR but maybe from one angle Fernando Llorente's goal is handball, maybe from the referee's angle it is not. Today is tough and tomorrow will be tough too but the day after we will be ready."

Liverpool thrash Porto again in the second leg. 2 goals at home, 4 goals in away match made aggregate score score 1-6 and also Porto scored once by Eder Militao. 

At the press conference Porto coach Conceição: "Liverpool only had four shots on goal and scored four goals, which demonstrates the quality of their team. We deserved more, the public deserved more, but we gave a very positive image of Portuguese football. Our Champions League was fantastic: we cannot forget the campaign. Liverpool is a very strong team. I think it is unfair: we did not deserve to come away from Anfield with a two-goal difference. Today we knew it was possible, we prepared a strategy that I think was appropriate, and at first we did well at all levels. The one time our opponents entered our penalty area, it was a goal.

Liverpool coach Klopp: "I think we're the only club in the semi-finals who reached that stage last season. It's the first time I’m playing Barcelona apart from in a friendly, so I'm looking forward to that. We had our moments – not too many – but we scored our goals and had another really big chance. We needed Alisson to make saves. In the second half Porto's energy levels dropped, so it was easier for us to control the game."

So, 4 semi-finalists are Barcelona, Ajax, Liverpool and Tottenham.