And more round was lost on leaders Chelsea who took full advantage and won their game against Wolves, putting them four points clear at the top of the table.
But Fergie believes that the Stamford Bridge outfit will drop points before the end of the season and United will be ready to pounce.
"The league has been wide open this season - it's been funny like that," said Ferguson. "Teams have dropped points you don't expect them to drop, but the very nature of the league suggests we still have a good chance.
"We've got a big match on Tuesday night (against West Ham at Old Trafford) - it's a massive game for this club and hopefully we can get the result we need."
Second placed United are currently four points behind Chelsea, the two sides meet at Old Trafford on April 3rd.