The Reds replicated their shootout win over Chelsea in the Carabao Cup final by triumphing 6-5 on spot-kicks after a goalless 90 minutes and extra time.
"It was intense - Chelsea would have deserved it exactly the same way we did, just like in the Carabao Cup - that's how small the margins are," added Klopp.
"The quadruple thing is absolutely outstanding that we can talk about it.
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