The veteran struck twice to condemn Juve to a 2-0 defeat at home.
"This is the proof that football is unpredictable," smiled Di Vaio after conquering Juventus.
"We had so little time to prepare for this match, yet we came away with our first win here in over 30 years".
The Rossoblu should've been tired, having played their rescheduled game against Roma on Wednesday in a 1-0 defeat.
"This is the proof that football is unpredictable. We are continuing to play well and remain solid, then of course everyone needs that little bit of luck.
"We have achieved something nobody expected and are very happy."