Klopp admits he was unimpressed by claims that Napoli were superior and fresher.
He rapped: "Tonight the questions are really a challenge, to be honest. I think the guy from Sky Italia asked me or told me Napoli was much better than us. I didn't see that game, so I don't know exactly where he was when the game happened. But now you say we were tired. Who had the cramps? Who was on the ground? Liverpool players or Napoli players?
"After the 2-0 they looked fresher than us, after the 1-0 they looked fresher than us - that's normal. You have a boost. But there was no fresher team on the pitch. There was no physical problem apart from the normal physical problems in a game like this, which is very intense [because] both teams fight hard and all that stuff. It's not a physical problem tonight. We have to finish the situations off.
"How everybody is in life, you need positive moments and you can run forever. We didn't have really positive moments tonight. They obviously got the second air, so they could go again. That's normal, but that was not the reason."