If there’s one game Stanford (1-0, 0-0 Pac-12) should have circled on their calendar this season, it is this one. The Big Game might feature Cal, but Saturday’s 4:30 p.m. matchup with No. 10 USC (1-0, 0-0 Pac-12) might be bigger. This is primetime, Saturday Night Football, with the eyes of the college football world on Stanford Stadium expecting to see the rebirth of a USC program under hotshot…