Barcelona miss an opportunity to take advantage of Napoli

Mess around and find out that the Champions League is unforgiving.

When you have an advantage, you need to take it, and maximize it, before the momentum swings.

Barcelona has learned this lesson in the competition many times over the past decade, and going into the second leg against Napoli, the question will be whether anything has changed.

For most of the match, Barcelona was in control. But their foot was never really fully on the gas.

Eventually, Robert Lewandowski made the breakthrough with a vintage, clinical finish.

Napoli sacked their manager just a few days earlier.