Two wins out of two, four points ahead of the Reds and Sir Alex Ferguson seemingly losing a key player per day.
It's no wonder that a huge smile has hardly left the City chief's face, or those of the supporters, since the opening day win at West Ham United.
Eriksson has in six short weeks at the helm already pumped hope and joy back into a deflated Blues following.
And while his side is being lauded for its easy-on-the-eye passing game and newly instilled attacking elan, a glance at the table shows that they will be the last Premier League side to concede a goal this season.
Of course, wins over West Ham United and Derby County, two teams unlikely to be in the thick of the battle for Champions League places at the end of the season, may not be the greatest achievements of all time.
Confidence
But it is the confidence and belief that come with the wins that will be most crucial come Sunday.
And the pressure will all be on the Reds when neighbourly hostilities are resumed.
Having already slipped four points behind their great rivals Chelsea and still lying below Arsenal and Liverpool, who both have a match in hand, in the embryo table United simply cannot afford to drop any more at this early stage. It is a fair bet that had Fergie had his choice of the fixture to follow two disappointing draws with Reading and Portsmouth then one of the last places he would have wanted to visit is the seething cauldron of Sportcity with the Blues on a high.
He knows that his title winners could have come unstuck last season had it not been for a missed Darius Vassell penalty and the United boss has a sharp enough memory to realise that his side have lost on three of its previous five visits across town.
The Scot and the Eriksson had their disagreements when the Swede was in charge of England and the first domestic clash between the two has all the hallmarks of a potential classic. City will attempt to play their neighbours off the pitch not kick them.
United players, used to up and at `em derbies, may find this one played more in the head and on the floor and it should be fascinating.
Shorn by injury and suspension of their two Rs - Rooney and Ronaldo - United are missing the men who scored 31 of their Premier League goals last season. And with Carlos Tevez still settling in City have every right to fancy their chances of extending their winning run. The fans will certainly scent blood.
The last time City won three on the trot at the start of a stop flight season was back in 1991-92 when, under Peter Reid, they went on to finish fifth.
Eriksson would no doubt settle for a repeat of that this season and simply carry on smiling.
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