Manchester United welcome Chelsea to Old Trafford this weekend, as they look to get back on track after a 2-2 draw with West Brom on Monday night.
But of course they are facing a massive challenge against the Premier League leaders.
Chelsea have been in excellent form this season and sit comfortably at the top of the Premier League table. For United this is the biggest test that Louis van Gaal has had so far as the manager of Manchester United - so this is his chance to show how he can take on the best teams in the Premier League.
One man who is certain Manchester United can get the win is Brazilian right-back Rafael Da Silva. Rafael has had a promising start to the season since returning from injury, even if his defensive qualities continue to be questioned.
But he believes that Chelsea are not invincible, despite their impressive start to the season.
He told the club's official website:
“Everyone is beatable. We have to do our best, of course. They are playing well. We’re playing at Old Trafford though and we’ve been getting results there so they are definitely beatable.
“Football is about results and, when you don’t play well and draw, like on Monday night, of course everyone will speak. But hopefully we can play well against Chelsea and, if we get the result, it would be very positive for us and the whole team.
“We just have to concentrate and do our best, and I hope we can get the result we want.”
Chelsea are likely to be without Diego Costa for the game, while Loic Remy is struggling to be fit after picking up a groin injury during the week.
So who knows, Manchester United might be able to inflict Chelsea's first defeat of the season.