Ronaldo broke the deadlock in the 51st minute, his 50th Serie A goal, and added a second after teammate Paulo Dybala left him with an open goal three minutes later.
Ciro Immobile pulled one back for a Lazio in the 83rd minute, leaving him and Ronaldo tied on 30 goals as Serie A’s joint topscorers. Before Monday’s result, that mark had only been achieved by two other players in the last 60 years of Serie A — current Juve reserve Gonzalo Higuain in 2015-16 while with Napoli and Fiorentina great Luca Toni in 2005-06.
“Records are always important, but the most important thing is that the team wins,” Ronaldo said. “We are a phenomenal team and we showed that again today, although we always want to improve and raise the bar.”
12 of of both Ronaldo’s and Immobile’s 30 league goals have come from penalties.
Ronaldo also became the first player to score 50 goals in the top flights of English, Spanish, and Italian football. He reached 50 Premier League goals in 172 games with Manchester United and 50 La Liga goals in 51 games with Real Madrid.
“Ronaldo’s an amazing player because he has an impressive ability to recover between games,” said Juventus coach Maurizio Sarri. “I’m not so much talking about the physical aspect but the mental aspect as well.
“We need to get another four points, every point is difficult at the moment when we’re playing every three days, so we’ve got to keep focused.”
Gab Marcotti and Julien Laurens discuss Cristiano Ronaldo’s 30-goal milestone and focus during Juve’s title charge.
Only one point behind Juve when the season restarted, Lazio have lost four of their last five games after being ravaged by injuries.
During an even first half, Alex Sandro headed against the post for Juve and Immobile thumped a low shot against the foot of the upright for Lazio. Apart from that, Immobile saw little of the ball and often found himself alone against three defenders.
The game swung Juve’s way after halftime when Ronaldo’s shot struck the arm of Lazio defender Bastos.
The referee awarded a free kick but, after a VAR review that took nearly three minutes, ruled that Bastos handled inside the area and Ronaldo scored with a penalty which squirmed under Thomas Strakosha‘s hand.
That made him the first player to score 50 or more goals in each of Serie A, La Liga and the English Premier League.
Three minutes later, Luiz Felipe lost the ball to Dybala who burst forward on the break and generously laid the ball off for Ronaldo to score into an empty net.
Ronaldo also headed against the bar but Lazio came back into the game when Immobile was tripped by Leonardo Bonucci after pouncing on a misunderstanding between the Juve defender and goalkeeper Wojciech Szczesny.
Immobile converted the penalty himself and Szczesny denied Lazio an equaliser when he palmed away a Sergej Milinkovic-Savic free kick which was heading for the top corner.