a few. The NCAA doesn't put names/directions on their bracket, so I'm not sure which is the "East," the "West," etc. They seed 1 thru 8 in each of the four brackets.
In the bracket where Nebraska is the #1 seed, Baylor upset #7 seed James Madison, 3-0.
In the bracket where Pitt is the #1 seed, Western Michigan upset #7 seed Auburn, 3-0
In the bracket where Stanford is the #1 seed, no upsets
In the bracket where Wisconsin is the #1 seed (where PSU is also), Hawaii upset #7 seed Iowa St., 3-1, and Miami upset #8 seed UNI, 3-1.