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They did not have to wait too much longer for their second, however, as Vidal linked up with Claudio Marchisio before chipping the ball delicately over the keeper.
The hosts almost pulled a goal back seven minutes after the restart when Mickael Ciani rose highest to meet a corner, forcing Gianluigi Buffon to make a smart save at his near post.
Juventus threatened to net a third just before the hour mark when Pirlo's free kick was parried into the path of Marchisio, but the Italian couldn't keep his shot down from close range.
Lazio had a golden chance to get themselves back into the match just five minutes later when Ederson's cross found Libor Kozak unmarked at the back post, but the Czech was slow to react and headed his effort wide.
The hosts had one last chance to pull a goal back in the third minute of stoppage time when Miroslav Klose collected Ederson's pass, only to hammer his shot wide from close range.