Paulo Dybala came off the bench to give unbeaten Serie A leaders Juventus a 1-0 win away to a brave Bologna side who had the better of the match and hit the post in stoppage time on Sunday.
Dybala was brought on in the 59th minute and settled the game eight minutes later as the Turin side bounced back from Wednesday's Champions League defeat at Atletico Madrid.
Juventus have 69 points from 25 games, 16 ahead of Napoli who were away to Parma later on Sunday.
"There was still a bit of a hangover from Wednesday, there's no use hiding it," said Juventus coach Massimiliano Allegri. "Today, it was important to win and to suffer. The lads did well."
Relegation-threatened Bologna, who are 18th in the 20-team table, were out of luck again in stoppage time when Sansone's brilliant curling effort was tipped onto the post by goalkeeper Mattia Perin.