Dybala's heroics helped Juve bounce back after their 3-0 Champions League flop in Barcelona.
The win in Calabria allowed Luciano Spalletti's Inter Milan to position themselves among the title challengers alongside champions Juventus and Napoli, who will also bid to make it four out of four on Sunday.
Pioli was sacked from Inter after failing to lead the Nerazzurri to Champions League qualification.
Juventus became the first team to win Serie A six times in a row when they beat Crotone 3-0 on Sunday to clinch the title with one game to spare.
AS Roma is on track to break ground on its new 56,000-seat stadium to be built in Rome's south-west, its chief executive said.
Injury-depleted Juventus beat in-form Atalanta 3-1 on Saturday as the defending champions went seven points clear atop Serie A.
Napoli supporters have been banned from attending their Serie A clash at Juventus in order to avoid crowd trouble.