With Amarilla it´s always been the same. A guy who always tries to compensate one side for the other, who systematically ignores the hard fouls, but who permanently cuts the actions short because of silly things and only then he shows some kind of authority. A bad referee, and a bad choice by the South American Confederation, an entity that has always promoted him.
Amarilla started the game with his seal: a really hard action by Pérez against Mascherano during the 3rd minute should have been punished with a direct red. It clearly was a dangerous and reckless action against the Argentinian midfielder, but the referee only used his yellow card. Just 2 minutes later, Pérez scored for Uruguay... which means that a player who should have been sent off, gave his team the first difference in the score. At 38th minute, and after having committed 4 or 5 more fouls, Pérez was finally sent off by Amarilla. Pérez obtained a 35 free minutes ticket from the Paraguayan ref.
Amarilla began then "administering" his criteria when he whistled. One here, one there... if you are yet booked, I won´t show you another card except it´s essential. He delayed a lot to book both Argentinian central deffenderes, who fouled the Uruguayan attackers in almost every air action (in fact, Milito should have been sent off because of a double yellow). But instead of this, Amarilla chose to show a red to Mascherano for a minor action during the 2nd half.
Good for the assistants
The assistants helped Amarilla: they invalidated one goal to each team during the 1st half for off-sides, in both cases, correctly.
And... about football
Uruguay, despite playing in a very hard way, had a great match, playing a good part of the match with just 10 players. A great night of their goalkeeper Muslera, and an excellent job of Suárez and Forlán, meant for Uruguay a new access to a continental semi-final after winning the penalty kicks 5-4. Argentinian's managers in AFA and the coach should be thinking why, in both World Cup and Copa América, they haven´t taken enough advantage of Lionel Messi, one of the greatest players in the world. Bad for us.