Sporting had chances to hit back in the second period, but the home side were reduced to 10 men in the 74th minute when Alberto Lora picked up a second yellow and it proved to be a comfortable conclusion for the Spanish champions as Neymar (2) and Arda Turan netted late on.
Read how it all unfolded in Sports Mole's minute-by-minute live coverage of the action below.
GIJON: Cuellar; Lora, Mere, Amorebieta, Lillo; Victor, Sergio, Burgui, Nacho; Gomez; Cop
GIJON: Cuellar; Lora, Mere, Amorebieta, Lillo; Victor, Sergio, Nacho, Burgui; Gomez; Cop
BARCA: Ter Stegen; Roberto, Mathieu, Pique, Digne; Busquets, Rafinha, Gomes; Neymar, Suarez, Turan