Pretty good day for 3 seeds: Florida State over FAU, Southern Miss over Arizona State, Nebraska over UConn, Illinois State over Indiana, LMU over Baylor, Michigan over Creighton, Clemson over Illinois, Duke over A&M, and hopefully soon TCU over Cal. A Frogs' win would guarantee more 3 seeds wins than 2 seeds.
Campbell-NC State got suspended, but IIRC 3-seed Campbell is up 1 in the bottom of the 9th. 3-seed Central Michigan up early on Miami, too. Couple more opportunities in Liberty-Tenn and Fresno-UCSB but those are just starting.
No 4 seed upsets yet.