CBS Sports' Jon Rothstein checks in with five observations from Friday in the 2016 NCAA Tournament, including another rough first-round showing by the Big 12.
Hawaii won an NCAA tournament game for the first time in program history by beating Cal by 11 in the latest upset from March Madness.
Cal point guard Tyrone Wallace suffered a hand injury in practice this week and has since been ruled out for the entire 2016 NCAA Tournament by doctors.
California has made that jump from "dangerous lower-seeeded NCAA Tournament team" to legitimately good team. And the rest of the country should be worried.

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