Norwich boss Paul Lambert backed all the Barclays Premier League new boys to make a big impressive after the Canaries' 2-1 win at Bolton was mirrored by wins for Swansea and QPR.
Few gave this season's promoted sides much of a chance of survival but all three have made their mark with Lambert's men getting themselves up and running on Saturday with first-half goals from Anthony Pilkington and Bradley Johnson.
Lambert said: "I've seen Swansea and QPR play and it shows the three teams that came up are very good. I think they are more than capable of holding their own but all we can do is concentrate on ourselves."
He added: "We have discovered the Premier League is unforgiving but the performance levels have been excellent and if they continue at both ends of the pitch we will be okay."
"We have got Sunderland at home coming up and then an easy trip to Old Trafford. But we have earned the right to play in this league and we make no apologies for going out and trying to win games."
Bolton were hampered by the 44th minute sending-off of Ivan Klasnic for an apparent head-butt on Marc Tierney, an incident Trotters boss Owen Coyle called an "act of folly" as it hindered his side's comeback chances.
Petrov's penalty gave his side hope but there was no disguising the frustration at the final whistle as Coyle's men slumped to their fourth defeat in a row - and their third at home already this season.
Coyle insisted the home form in particular did not bother him - despite the fact that his side only lost four games at the Reebok Stadium throughout the whole of the last campaign.
"We always knew we would have a tough start but my concern is when we concede soft goals," said Coyle. "We need to be far better than we were today from start to finish - it's as simple as that."
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