Lazio dominated the first hour and went ahead with an Emre Can own goal in the 59th minute before Joao Cancelo levelled for Juve in the 74th, four minutes after coming on as a substitute.
Juventus, chasing an eighth successive title, have 59 points out of a possible 63, while second-placed Napoli are on 48 after their 0-0 draw at AC Milan on Saturday. Place bet on Live Matches 24/7 on NaijaBet
Lazio are seventh after continuing their dismal run against Serie A’s so-called big teams – Juventus, AC Milan, Inter Milan, AS Roma and Napoli. They have taken only one point in seven games this season against sides from that group.
Juve goalkeeper Wojciech Szczesny beat away a Luis Alberto shot and denied Marco Parolo with an excellent one-handed save while the visitors’ Daniele Rugani cleared a Ciro Immobile lob off the line as Lazio dominated the first half.
The hosts went ahead when Luis Alberto drove his corner into the heart of the Juve area and the unfortunate German midfielder Can stooped to head the ball into his own net.
Juve had offered little threat until Paulo Dybala’s low shot was parried by Thomas Strakosha and Cancelo drove home the rebound.
After desperate Lazio protests, Ronaldo blasted his penalty into the roof of the net to secure the victory.