Cristiano Ronaldo became the first player to score 400 goals in Europe’s top five leagues, as Juventus dropped points for the first time this season.
Ronaldo’s fifth Serie A goal for Juve was added to his 84 Premier League strikes for Manchester United and 311 in La Liga for Real Madrid.
The Portugal captain tapped in, after Joao Cancelo’s shot was blocked, having earlier hit the post with a header.
However, Daniel Bessa equalised with a header, from Christian Kouame’s cross.
Juve are now four points clear on top of the table ahead of second-placed Napoli.