Giorgio Chiellini conceded Juventus' first hour against Lazio was their worst performance of the season, but paid tribute to goalkeeper Wojciech Szczesny for keeping them in the game.
Szczesny made five saves in a brilliant performance as Juve overcame a poor display to win 2-1 on Sunday, extending their lead atop Serie A to 11 points over Napoli.
The away side came from behind to score twice in the final 16 minutes, substitute Joao Cancelo netting his first goal for the club before earning the match-winning penalty scored by Cristiano Ronaldo two minutes from time.
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Emre Can had earlier scored an own goal and it looked like Juve were on course for their first league defeat of the campaign, but the efforts of Szczesny, who made his best save from Marco Parolo in the first half, kept them alive before the fightback.