Cavani scores brace in Napoli win
Gokhan Inler and Edinson Cavani each scored twice and Marek Hamsik also found the target for Napoli. Iceland midfielder Birkir Bjarnason scored for Pescara in the 18th to briefly make it 2-1.
Juventus, which beat 10-man Torino 3-0 in the Turin derby Saturday, has 35 points. Napoli is next with 33 and Fiorentina and Inter Milan are tied for third with 28 each ahead of their matches later Sunday.
Fiorentina puts its eight-match unbeaten streak on the line against Sampdoria and Inter faces struggling Palermo.
Maradona led Napoli to its only two Serie A titles in 1987 and 1990.