Ronaldo scored the lone goal in Juventus\' 1-0 derby win over Torino, the 5000th goal for the club in Serie A.
The result keeps Juventus unbeaten in 16 straight matches to open the domestic season. They have an 11-point lead on second place Napoli.
Ronaldo received a yellow card for bumping Torino keeper Salvador Ichazo while celebrating the goal.