Oklahoma: Oklahoma has been in great tournament shape for the majority of the past month -- the Sooners have been playing solid hoops, and their RPI and SOS figures are great -- but it nonetheless entered Saturday outside the comfort of lockdom. And then the Sooners lost to TCU. That probably isn't enough to put Oklahoma below a score of the teams you see here, but when you really dig in to its résumé, there's not much about it that screams "lock." A first-round loss to Iowa State next week could have the Sooners wavering by Selection Sunday.