Napoli constantly played balls over the top, and they constantly made runs beyond Cavani from midfield. Chelsea as a team looked vulnerable all night. Although I don´t remember Cahill being directly at fault for any of the goals, like Luiz was, it is difficult to say he had a good game when his team conceded 3. If it wasn´t for Cech and with a little better finishing it would have been more than three btw.