You know what I just realized? The Derby d'Italia against Inter could be Del Piero's 529th cap for Juve, which will put him in the 2nd place of all time (right after Scirea).
552 SCIREA Gaetano
528 FURINO Giuseppe
527 DEL PIERO Alessandro
481 BETTEGA Roberto
476 ZOFF Dino
460 BONIPERTI Giampiero
450 SALVADORE Sandro
447 CAUSIO Franco
440 CABRINI Antonio
433 CUCCUREDDU Antonello
Del Piero usually scores on special occasions
552 SCIREA Gaetano
528 FURINO Giuseppe
527 DEL PIERO Alessandro
481 BETTEGA Roberto
476 ZOFF Dino
460 BONIPERTI Giampiero
450 SALVADORE Sandro
447 CAUSIO Franco
440 CABRINI Antonio
433 CUCCUREDDU Antonello
Del Piero usually scores on special occasions
Del Piero scoring a winner against Inter would be like big knock on their head.
