Pezzotta used the same criterion all the time. The non given fouls were correct. He was always close to the action. He gave the yellow cards when it was necessary. He was neutral and had the control of the match.
Pezzotta showed the red card rightly. It was a foul with too much force.
It was a good match. Liverpool was not bad, but Gremio was better. It´s not easy to eliminate a team from Brazil in this stage. The only team who had done that is Deportes Tolima (COL), who eliminated Corinthians yesterday.