Manchester United manager Sir Alex Ferguson believes this season's title race will prove to be the tightest in Premier League history.
United are bidding for a fourth consecutive league crown and returned to the top of the table following a 3-0 victory over Fulham on Sunday.
They are now two points better off than Chelsea and Arsenal in second and third place respectively.
However, despite United getting their noses in front, Ferguson believes the race for the title will go right to wire this season.
"At the moment it is looking like the tightest Premier League we have had - it is very tight," he explained.
"We only have eight games left. Chelsea have nine. We are all involved in Europe. Chelsea also have the FA Cup."
On three occasions in its 17-year history the Premier League has been decided by just one point, but this season Ferguson believes that goal difference could prove vital.
"You have to think about goal difference," added Ferguson. "We are only four goals ahead of Chelsea, I wish it was 14 to be honest, but at least it is in our advantage.
"I suppose the simple way for us and Chelsea to look at it is just to win all our games but life is never that simple."