The first four days of the 2012 NCAA Tournament are in the books with plenty of exciting action to look back on in the Rounds of 64 and 32. From UNC Asheville's near upset over Syracuse to Norfolk State and Lehigh upsetting Missouri and Duke, brackets have been sweated out or broken already. And now is the time to get a copy of SB Nation's printable NCAA bracket for the Sweet 16.

Related: March Madness for the Rocky Mountain Region | Printable NCAA Bracket

Can N.C. State, Ohio or Xavier, all double-digit seeds, continue their runs into the Elite Eight? Ohio and Xavier could meet in the next round if they defeat No. 1 North Carolina and No. 2 Kansas Jayhawks, respectively. All four No. 1 seeds are still in tournament, but this is the time for one of those upsets to happen.

For more on March Madness at every level, visit SB Nation NCAA Basketball. Our 2012 NCAA Tournament hub has everything you need for the big one.