His dynamic 3 - 4 - 3 system thrived by centering on blistering the opposition with rapid counter-attacks .
Industrious Tuscan tactician Walter Mazzarri proved to be the man to take Napoli up a notch .
Walter Mazzarri 's dynamic 3 - 4 - 3 system thrived by centering on blistering the opposition with rapid counter-attacks .
Industrious Tuscan tactician Walter Mazzarri proved to be the man to take Napoli up a notch .