In that game, the most important two controversial decisions were penalty kicks. In the 11th minute, the left baseline of the draxler penalty area crossed, and Mascherano flew to tackle the ball, which reflected the baseline after hitting Pongos raised arm. According to the current rules, this kind of ball will not be shot. But according to the rules of the day, Paris was supposed to get a penalty.
In the 90th minute, Suarez made a penalty for Barcelona. After receiving the pick, Suarez burst into the penalty area and braked suddenly. After a slight physical contact with the Paris player behind him, Suarez fell to the ground immediately. Aitkin gave a penalty and Barcelona chased the score to 5-1. Whether the ball should be called a penalty is still debatable.