This is a 'scorecard' by conference for 2013, the 15-th for the 64-team playoff system where every well-established conference gets an automatic bid. You can find the full results elsewhere.
My original motivation for this summary was the thought that the regionals are a major source of inter-conference and inter-region play that helps one evaluate the relative strength and (possibly) future seedings of teams from various regions and conferences.
Current status:
Super Regionals complete.
LSU (SEC, N4 seed) and UCLA (Pac-12, beat N5 seed) are first into CWS.
Here is the 'histogram' of the success rate for the 2011 NCAA regionals.
I tally a Regional champion under "win" and the Super-Regional champion (the team that goes to the CWS) under "champ" so the "champ" column is unchanged from the older 48-team system.
------ wins ------ Conference Number 0 1 2+ win champ comments ========== ====== === === === === ===== ----------------- SEC 9 1 2 2 2 2 5 losses on 4-5 first day ACC 8 2 2 2 2 only a 5-3 start Pac-12 4 2 2 strong, with perfect 4-0 start SunBelt 4 1 3 2-2 start but FAU beat N1 UNC Big-12 3 1 2 solid, deserved more? Big West 3 2 1 perfect 3-0 start Colonial 3 2 1 over rated? Big East 2 1 1 perfect first day; UL beats N2 Vanderbilt Big Ten 2 1 1 perfect start; IU beats N7 Florida State Southland 2 1 1 Central Ark gets best-4-seed prize West Coast AC 2 1 1 bad 0-2 start Big South 2 1 1 Liberty knocked out Clemson Mountain West 2 2 bad 0-2 start, bad finish Atlantic Sun 2 2 bad 0-2 start, bad finish Conf USA 1 1 Rice upset N8 seed Oregon twice Ohio Valley 1 1 Austin-Peay beat Florida Southern 1 1 . Northeast 1 1 upset Arkansas Horizon 1 1 upset Florida Ivy 1 1 Columbia gets 1st tourney win America East 1 1 . MAC 1 1 . Mo-Valley 1 1 Wichita St is back, and gone WAC 1 1 . Summit 1 1 . Atlantic-10 1 1 . Patriot 1 1 . Metro Atlantic 1 1 Last regional win was in 2006 SWAC 1 1 Last got a tourney win in 2004 MEAC 1 1 ONLY regional win was in 2002 Great West 0 - NO AUTOMATIC BID (new in 2010) independent 0 - only New Orleans this year