Arsenal had their summer signing from Barcelona to thank for victory over Sunderland, with the 25-year-old scoring a brace at the Stadium of Light.
Arsene Wenger's signing of Chile star Alexis Sanchez from La Liga giants Barcelona in June always looked like it was a fantastic deal, and it's no surprise to see the former Udinese man producing the goods with ease in the Premier League.
Sanchez scored Arsenal's two goals, without reply, to earn them their third win of the season at Sunderland on Saturday. The £35 million man punished errors by Wes Brown and Gunner's old boy Vito Mannone with a ruthlessness few Arsenal men have managed in recent years, and his manager was quick to praise the player.
"He's not scared to taken the ball and go at you anywhere, that is of course very important," said Wenger. "I think he had a good game today.
"In the end got two goals and I don't know what you would want more."
Fellow forward Alex Oxlade-Chamberlain was even more outspoken with his praise of the Chilean, labelling him 'unbelievable.'
"He’s a world-class player - everyone saw that at the World Cup," the England winger said. "He’s proved that and he’s played for Barcelona where we’ve all seen what he’s done.
"He’s an unbelievable player and part of his game is his character and his hard work - that’s where he’s got both his goals from today."
Sanchez now finds himself some way out in front as the Gunners' top goalscorer, having found the net 8 times since arriving in the summer - that's 3 more than his nearest rival Danny Welbeck, and undeniable proof that the two are striking up quite a partnership up front for Arsene Wenger's side.