Everything to know before national signing day in the Pac-12

Clay Helton is looking to continue USC's run atop the Pac-12 recruiting rankings. Tim Heitman/USA TODAY Sports

Eight Pac-12 recruiting classes rank among the top-40 groups in the country, but the conference has already seen a drastic shift this week and should see plenty of movement during the race to signing day, as virtually every class has a number of openings available to add potential impact commitments.

Here’s a look at where recruiting stands in the conference: