Alexis Sanchez struck twice .
Alexis Sanchez created a goal for Neymar as Barcelona recovered from conceding early to maintain their perfect La Liga start with a 4 - 1 win at home to Real Valladolid on Saturday .
Alexis Sanchez struck twice and created a goal for Neymar as Barcelona recovered from conceding early to maintain their perfect La Liga start with a 4 - 1 win at home to Real Valladolid on Saturday .