Brandon Ríos vs. Urbano Antillón was a boxing Lightweight championship match for the WBA Lightweight championship.

[1] The bout was held on July 9, 2011, at Home Depot Center, in Carson, California, United States and televised on Showtime.

[2] A bout between both Ríos and Antillón was to take place on the undercard of Antonio Margarito vs. Roberto Garcia.

[3] The fight was called off due to a cut sustained during sparring on the eyebrow of Ríos.

[4][5] The Mexican singer José Manuel Figueroa performed as Ríos entered the arena.