Lazio coach Simone Inzaghi hinted of a title challenge after victory over Juventus.
The result has Lazio five points behind leaders Inter Milan as they won 3-1 via goals from Luiz Felipe, Sergej Milinkovic-Savic and Felipe Caicedo - all after Cristiano Ronaldo had put Juve ahead.
After the win, Inzaghi said: "We are in a great period of form, we should be ambitious, knowing also that six weeks ago people said we weren't getting results, but I remained calm. The club was always close to me, even when we lost, reassuring me there were no problems.
“I also have a squad that is always at the disposal of my staff. Now we enjoy this victory, which we hadn't managed for 16 years here, a game I remember, because I was on the bench!
“We enjoy for a few hours, but from Thursday must get right back on track and aim to stay in the Europa League. The lads in the Curva never stopped cheering us on, but we know that in football, and especially in Rome, the atmosphere can change rapidly."