Devon Alexander vs. Marcos Maidana, was a Boxing Welterweight super-fight. The bout was held on February 25, 2012, at the Scottrade Center in Saint Louis, Missouri, United States. The fight was televised live on HBO's Boxing After Dark. They shared a common opponent in southpaw Demarcus Corley, against whom Alexander scored a unanimous decision victory in January 2008, while Maidana did the same in August 2010, knocking him out in the eighth round in early 2011.