Saturday matches up two of the most well-known sides in the world, and the fact that it is a London derby can only give the encounter more flare and passion.
Arsenal's season hasn't been as bright as the last few ones. After having the top four or five down quite simply in recent years, the 2011/2012 season is proving more difficult for the Gunners, who are struggling with injuries, defensive issues, managerial problems, and angry fans.
Chelsea are in a way playing in the shadow of Manchester United and Manchester City, which in a way gives them the dark horse factor, since the race between the Manchester rivals has been the hottest topic in the last couple of months.
Yes, Chelsea are definitely the favorites to win this match, but it isn't beyond Arsenal to snatch a victory from the hands of the Blues.
But they can only do so if they can do the following things.