Arsenal got their first win of the season, after beating Watford 3-1 at Vicarage Road. Sanchez was involved in all three goals.
The Chilean was brought down in the box, with Cazorla converting the resulting penalty. Sanchez doubled the lead with a lucky goal.
The third goal was all about vision and pinpoint accuracy from Sanchez, as the forward found Ozil to head in the third goal for Arsenal.
Watford were given hope of a comeback early in the second half thanks to debutant Roberto Pereyra’s goal, and Petr Cech pulled off a strong double save to keep out efforts from Jose Holebas and Odion Ighalo.