Juventus moved 14 points clear at the top of Serie A with a routine victory over second-bottom Frosinone. Federico Bernardeschi was thwarted by Frosinone goalkeeper Marco Sportiello in stoppage time.
Paulo Dybala found the top corner from Cristiano Ronaldo's pass to put the hosts ahead at the Allianz Stadium.
Leonardo Bonucci forced home following a goalmouth scramble, before Ronaldo scored his 21st goal of the season in all competitions.
Federico Bernardeschi was thwarted by Frosinone goalkeeper Marco Sportiello in stoppage time.
Second-placed Napoli face Torino at home on Sunday.
Massimiliano Allegri's Juventus side travel to Atletico Madrid on Wednesday in the first leg of their Champions League last-16 tie.
