The usually formidable shot-stopper picked the ball out of his net four times in a disastrous day for the Italian champions
Juventus goalkeeper Gianluigi Buffon was unable to identify the cause of his team's collapse after they slumped to a 4-1 Champions League final loss to Real Madrid on Saturday.
The Serie A heavyweights were level at 1-1 going into the break in Cardiff thanks to Mario Mandzukic's spectacular overhead kick, but Casemiro's deflected strike, Cristiano Ronaldo's second and a late Marco Asensio effort saw Zinedine Zidane's side become the first team to retain the Champions League in its current format.