Manchester United set themselves to take a decisive stranglehold on the Premier League title thanks to their 1-0 win over Arsenal at Old Trafford last night.
Park Ji-sung's solitary first half goal extended their unbeaten start to the season to 16 matches and left them two points clear of the Gunners and Manchester City, whilst still having a game in hand.
And Ferguson knows, if his side can come away from Sunday's trip to Chelsea with another three points, they will start to feel increasingly confident about landing a record 19th league title.
"Sunday is a massive game," said Ferguson. "That will go a long way to establishing what happens at the top of the league.
"We are 16 games undefeated. Now we have to make it 17."