Juventus goalkeeper Gigi Buffon branded their Super Cup defeat to Napoli a "failure".
Gonzalo Higuain scored twice for Napoli to force penalties in their Italian Super Cup victory.
"These things can happen. Unfortunately it happened to me, to us," the goalkeeper told Rai Sport.
"Above all we are disappointed because we had three match points to win it clearly - one in extra time and two in the shoot-out - and didn't do it.
"Compliments to Napoli who achieved this remarkable comeback from a very difficult position.
"When we took the lead 12 minutes from the end, you think more about not running risks, especially as energy and sharpness are not optimal. Despite that, we weren't focused enough to the end, as the goal for 2-2 is one a team that has to win cannot concede."
Buffon added: "The solar year was very positive with many satisfying moments, but we concluded it with second place in a competition we cared about a great deal. Obviously, at Juventus second place is a failure.
"We would've been happy to win the trophy, but it can give us more determination and rage to put into the performance if we are in this situation again."