 On 26 March 2011 Gamboa fought Jorge Solís to defend his WBA featherweight title.Although the fight was originally agreed to contest both of Gamboa's WBA and IBF featherweight titles, Gamboa missed a mandatory re-weighing procedure established by the IBF which resulted in the title being withdrawn.The fight lasted only four rounds after Gamboa sent Solis to the floor a total of five times, causing referee David Fields to stop the fight, giving Gamboa the victory by TKO.