Cristiano Ronaldo stretched his goal-scoring streak to six consecutive league games as Juventus took top spot in Serie A on Sunday with a 2-1 win at Roma, whose defeat was made worse by the cruciate ligament injury of rising star Nicolo Zaniolo.
Juventus move two points ahead of Inter Milan, who were held 1-1 by Atalanta at the San Siro on Saturday, to move top after going two goals up in just 10 minutes in Rome.
Minutes later Argentine Dybala was hauled down in the box, and Ronaldo stepped up to convert from the spot to make it nine goals in six league games.
Both sides had casualties in the first half with Demiral limping off with a knee injury not long after scoring his first Juventus goal, and replaced by Matthijs de Ligt.
And 20-year-old Zaniolo was stretchered off in tears eight minutes before the break after falling victim what Roma later confirmed was a ruptured anterior cruciate ligament in his right knee as he tried to pass between De Ligt and Adrien Rabiot.