Atalanta's German Denis had other plans. Inter lead by 3-1 at one point and seemed well on their way to victory. Unfortunately for nerazzurri fans, Denis scored three unanswered goals to lead his side to a shocking victory at the San SIro.
The game was incredibly entertaining in the second half, providing viewers with all sorts of crazy plays as well as extra curricular activity as the final whistle blew.
Here are six things to take away from Sunday evening's match.