Alexis Sanchez scored one goal, set up another and also earned a penalty as Arsenal used a dominant first-half display to beat Watford 3-1 for its first win of the Premier League season on Saturday. The Chile forward tumbled to the ground in the area after being challenged by Nordin Amrabat, giving Santi Cazorla the opportunity to slot a penalty kick down the middle to put Arsenal ahead in the 9th minute. Meeting Theo Walcott's low cross from the right, Sanchez fell over while applying the finish but still managed to get the ball past Watford goalkeeper Heurelho Gomes and over the line before it could be cleared. More...