Following the Judah victory, Khan began chasing a big money fight with top pound for pound fighter Floyd Mayweather Jr. Mayweather seemed uninterested, and instead said that Khan should fight the Mayweather Promotions prospect Jessie Vargas, an option that Khan dismissed. In October 2011, it was announced that Khan would defend his WBA and IBF light-welterweight against mandatory challenger Lamont Peterson (29–1–1, 15 KOs). The fight would take place on 10 December in Peterson's home town of Washington, D.C. at the Walter E. Washington Convention Center.