The 1999-2000 season is by far the most glorious in Lazio's history, coincinding with the one hundredth birthday of the Societa' Sportiva Lazio.
At the end of an incredible season, with Lazio always starring, and after a thrilling end down to the last game, they gain 10 points on Juventus in the last 8 games!
It marks the first time in Serie A history that any team has come from so far behind to capture the league title.
It broke an 8-year domination of Serie A by two clubs: A.C. Milan (5 titles) and Juventus (3 titles), during which Lazio finished runner-up twice.
On the last day, Lazio recieved Reggina, while Juventus had to travel down to Perugia.
Lazio eased throught the game in a sold-out Olimpico, everybody waited for some news from the Renato Curi stadium.
But heavy rain postponed the game for almost an hour, and when they restarted the game, within 5 minutes, Juventus didn't cleared a cross well, and Perugia player Calori struck the ball passed Van Der Sar.
Juventus 1-0 down, Lazio were virtual Champions but there was still a lot to play in Perugia.
The 'bianconeri' was pushing forward, but the heavy rain and pitch didn't helped them. Even Juventus went 1 men down, with Zambrotta's 2nd yellow card.
But Perugia stood firm, their defence was unbreakable.
It's 18:04 h, final whistle from referee Colina in Renoti Curi, Juve lost... Lazio wins... Campione D' Italia !