2010–2013 Atlantic 10 Conference realignment

The Atlantic 10 (A10) had suffered a major blow with the loss of traditional conference power Temple to the Big East in March 2012.

[3] Butler had been the Horizon League's most dominant men's basketball program in recent years; although the Bulldogs did not make the 2012 NCAA tournament, they reached the championship game in both 2010 and 2011.

In addition, Butler's Indianapolis location gave the A10 a geographic bridge between Saint Louis and Ohio members Dayton and Xavier.

[1] Mason took itself out of the realignment picture for the time being on May 11, when AD Tom O'Connor told The Washington Post that it was staying in the CAA.

[9] Since the A-10 does not sponsor women's golf, Butler moved its team in that sport to the Metro Atlantic Athletic Conference (MAAC).

With the formation of a new conference out of the Big East by its seven private urban Catholic non-football members, speculation immediately arose that it would fill out its membership with several similar schools from the Atlantic 10.

[11] On March 20, 2013, the expected announcement came, that Xavier and Butler would be joining the new Big East, along with Creighton University of the Missouri Valley Conference, while Saint Louis and Dayton among other schools remain as possible future expansion candidates.