USC Trojans cling to final at-large berth 

March, 12, 2011
3/12/11
7:01
PM ET

Alex StephesonStephen Dunn/Getty ImagesAlex Stepheson and the Trojans are barely hanging on to an at-large berth.
UPDATED: Saturday, March 12, 7 p.m. ET

This edition of "Bracket Math" includes all games through Saturday, March 12, 6 p.m. ET. Rankings reflect an up-to-date S-Curve from yours truly, posing as one hypothetical member of the NCAA men's basketball committee.