Chelsea legend Ron Harris claims all the pressure will be on Manchester United in Sunday's Premier League title showdown at Old Trafford.
Carlo Ancelotti's men travel to the north west targeting a win that would send them above United on goal difference with just two matches remaining - a turn of events that appeared simply unthinkable just over two months ago.
Chelsea were 15 points adrift of, and 1-0 down to, the leaders on March 1 but fought back to win that match and slowly reel in their rivals with a run of 25 points from 27 games.
Harris, who has played more times for Chelsea than any other player, said: "The pressure's on Manchester United. I've seen some of their games on television and they don't seem to be playing remarkably well.
"Over the last nine or 10 matches, Chelsea have made up all that difference."
The champions appear to have a tougher run-in than United on paper but Harris believes winning at Old Trafford would all but guarantee maximum points from their final two games.
He added: "Last year, they had to beat Wigan at the end of the season, so they've sampled all that before.
"If they did get a result and win on Sunday, they're then at home to Newcastle, which you'd expect them to win.
"Then they go to Everton, who have had a good run and have been a bogey side to Chelsea, but Chelsea know what they've got to do."
United look set to rest key players in Wednesday night's Champions League semi-final second leg against Schalke with Sunday's game in mind.
Harris said: "I don't think they're frightened but they've got to be worried.
"Manchester United beat us in the Champions League but I always think cup football's completely different to league football, so that goes out of the window. I think they'll be more worried than Chelsea will be."
Harris suggested the current United squad was not as strong as in previous years, adding: "If you asked any Manchester United supporter about the last 10-15 years and if the side they've got today compared to a few years ago, I'm sure they would all plump for the side that won things a few years ago."
United boss Sir Alex Ferguson this week claimed bad refereeing decisions were conspiring to hand the title to Chelsea.
Harris, who was at Stamford Bridge on Saturday when two goals that never should have stood helped the home side beat Tottenham 2-1, said: "Maybe you need a little bit of luck.
"Maybe Chelsea should've had a penalty against Manchester United in the Champions League when Ramires got brought down.
"But they never seem to see those things, the managers."
Ancelotti's biggest decision this weekend will be whether to persevere with the misfiring strike partnership between Didier Drogba and Fernando Torres, which he resurrected against Spurs.
Harris said: "I didn't think they played that badly together, Drogba and Torres.
"I don't see that the two of them can't play together. Good players can play anywhere.
"I think Carlo Ancelotti will start with them."
Whether they win the title or not, Chelsea have shown real character even to give themselves a chance of retaining their crown by bouncing back from their worst run in the league for almost 15 years.
Harris said: "You've got a few senior players in the side who have most probably taken the bull by the horns.
"Sometimes, when thing don't go particularly well, a manager before training or after training has a little talk.
"Maybe they've ironed a few things out.
"They've never really experienced over the past few years a run where they've taken six points out of 20.
"So you've got to pat the players and the manager and the staff on their backs for getting them back into a position where they've got a great chance - if they win on Sunday - of winning the Premier League."
