Napoli opened up a 10-point advantage over third-place AC Milan and with it went ever closer to sealing a place in next season's UEFA Champions League after a 3-0 win over struggling Pescara.
Udinese moved up to fifth with its fourth win in a row thanks to
Pereyra, who hit the crossbar in the first half, made amends with a more difficult effort midway through the second half to lift Udinese into a qualifying berth for the UEFA Europa League, ahead of the remainder of the weekend's matches.
Atalanta and Bologna drew 1-1 to both get the point they were looking for in a low-key affair at the Stadio Atleti Azzurri d'Italia.
Napoli coach Rafa Benitez said the erroneous showing against Udinese must not be repeated in the UEFA Champions League date with Arsenal.