Gianluigi Buffon start for Juventus again in the game against Udinese today, now he is only one short of the all-time record held by Paolo Maldini.
Here is the full list of most all-time appearances in Serie A (according to Squawka):
Paolo Maldini (647)
Gianluigi Buffon (646)
Francesco Totti (619)
Javier Zanetti (615)
Gianluca Pagliuca (592)