In theory, over the course of a season, the good, bad and ugly refereeing decisions will even themselves out. That may be fine and dandy when you look back at the entire campaign but when it effect's the outcome of the biggest match of the season to date, well, that's another story.

The margins when Chelsea and Manchester United meet are always gossamer fine and Sunday was no different which is why each and every decision is magnified 1000 times more than usual.

At 68 years-of-age, Sir Alex Ferguson's eyesight is as sharp as a laser beam. Those beams would have been boring into Martin Atkinson at the end of this contest as a couple of questionable calls didn't go the Scotsman's way.

"It was a bad decision, but what can you do? You lose faith in the refereeing sometimes. That's the way the players are talking in there. It was a bad one. That goal should not have been allowed. We've dominated the game and had great chances to win the match", he fumed afterwards as Stamford Bridge rocked in delight as the Blues took all three points.

I could see his frustrations with the Wayne Rooney offside call, it was desperately tight, but who knows if the United striker would've finished the chance. The real game changer was Atkinson not whistling for the pull down by John Terry on Luis Antonio Valencia. If it's a penalty, Terry is on a yellow for 75 odd minutes and United have the opportunity to score from the spot.

The complaint that Darren Fletcher didn't foul Ashley Cole on the free-kick that led to the Chelsea goal is legit but in all fairness there was a stonewall penalty for the Blues minutes earlier. How Atkinson overlooked Jonny Evans as he almost put his foot through Didier Drogba's chest was unbelievable. For Drogba to receive a yellow card was baffling. My only thought was that it may have been for over acting as the Ivorian was surely auditioning for 'flatliners'. I guess it does go to prove that in a way calls do even out!

I thought that over the course of ninety minutes, United, probably deserved at least a point as Sir Alex, who got his tactics completely wrong at Anfield, showed that he still has the smarts for the big matches by getting the x's and o's spot on.

The five-man midfield bossed the proceedings making Chelsea's diamond look pedestrian and outmoded. First to the challenge, quick to fill holes, the pairing of Fletcher and Michael Carrick was inspired. With Ryan Giggs looking even better that he did last season when he was named the player of the year, you thought that if United scored first they would take control.

Here you have to give credit to Chelsea's back line. They didn't allow United any good looks and when you consider it's now been 872 minutes since they last conceded at the Bridge, you'd have to say JT and Co. were good value for the clean sheet.

One cause of concern for Carlo Ancelotti may be the amount of chances his side created especially when you consider the goal rush his team has been on. Still, the Italian is pragmatic enough to know that 1-0 over your closest rivals is as good as 3-0. It also maintains a decade of dominance for Ancelotti over Ferguson. Since losing to United while manager of Juventus in 1999, the Italian is unbeaten against the Scotsman and I can guarantee this rankles SAF.

Ancelotti will also know that his team didn't play well but did what was required as there was a whiff of Mourinho around this display. It was old school Chelsea mixed with grit, determination and a slice of luck, truly a potent mixture.

With a perfect two-for-two record against 'B4' opposition this season, the final piece of the puzzle is just a few weeks away when they take the short trip to the Emirates on the 29^th. The last time they were in North London they ransacked Arsenal's home, a repeat performance and you can start draping the Premiership trophy in blue ribbons.

With the transfer ban temporarily lifted and money to burn, I can't see anything other than a bad decision or two from derailing their quest for domination. It'll just depend on when and where those decisions go against them. Bolton away, no biggie, at Old Trafford in the return fixture - we might just hear Ancelotti chirp.

Until then, I'll see you at the far post.