 Ten days later on 16 March for Colo-Colo's third game Libertadores, Castillo played in Colo-Colo's 3–2 home win over Santos at Estadio Monumental which suffered a 35-yard free kick goal of Elano in the 4th minute and forty-four minutes later in the 48th minute Neymar preciosuly eluded the Uruguayan to score the second goal for the São Paulo state-based outfit in a game which Esteban Paredes, Ezequiel Miralles and Andrés Scotti scored for the home.After the continental game Castillo played in a 1–1 draw with Cobreloa that contemplated goals of Paredes for the home and an own-goal of Daúd Gazale to the visitors.However Gallego then relegated Castillo to the bench following Prieto's well performance against Huachipato so that Castillo began to challenge the keeper position with Prieto after a rise status of the last.