Marek Hamsik struck the winner for Napoli against Genoa.
Napoli coach Walter Mazzarri warned this Napoli side is not ready for the Champions League.
He said: "The victory over Genoa is worth a great deal, although we aren't mathematically qualified yet. Perhaps we felt the pressure of the two consecutive defeats and also the heavy rain didn't help our style of play on the night.
"The Champions League is a tough competition with a very high level and to give a good account of ourselves we must involve many factors. You need strength in depth and two great players for every position.
"The lads are doing incredible things this season and I do not feel ready to compliment an individual, as the whole group deserves praise."