Replacing Gianluigi Buffon in goal is quite simply, a next to impossible task. Wojciech Szczęsny is filling those boots effectively, however.
Juventus, in six games, have conceded four times. Interestingly, those four goals came only in two games. One against Manchester United and the other against BSC Young Boys. So, out of six games, Szczęsny kept four clean sheets. Not bad.
The Pole does have a brilliant defense ahead of him to reduce scoring opportunities. Still, it would be a disservice to him if do not consider his massive improvement between the sticks.