Birmingham travel to Sunderland tonight with Steve Bruce set to face his nemesis in the form of Kenny Cunningham.
The former Blues skipper epitomised Birmingham's gritty Premiership credentials with his obdurate approach that struck a chord with the club's predominantly working-class support.
Bruce often referred to Cunningham as one of his best ever signings after the centre half arrived from Wimbledon in 2002 on a free transfer.
The relationship ended acrimoniously, however. Cunningham was incandescent with rage after Birmingham's co-owner David Sullivan laid the blame for last season's relegation firmly at the feet of the players.
His anger manifested itself in an end of season tirade against the both Bruce and the club's owners, which questioned many aspects of the regime last term.
It is, therefore, intriguing, that the two foes should meet so soon after their spat with Cunningham now plying his trade under Niall Quinn at Sunderland.
Birmingham will be bid-ding to build on their 2-1 triumph over Colchester whilst the Black Cats will want to usher in the Quinn era with a positive performance in front of their own supporters.
Cunningham will have to be in prime form to contain Birmingham's brightest new star, Nicklas Bendtner, as well as the likes of Mikael Forssell and David Dunn.
The erstwhile England international is showing glimpses of the form that saw him drafted into Sven Goran Eriksson's squad and is finally free of injury.
And Dunn is relishing the chance of terrorising his former teammate. "I have spoken to him a few times on the phone, so we'll have to get at him won't we," said Dunn with an impish grin.
"I think the things that Kenny said were blown up a little bit and I don't think he actually meant it the way it came out.
"He was a great player, but he's not our player any more. Kenny is a good defender, but we will test him out."
Dunn is acutely aware that Birmingham will need to increase their performance levels. They were effective during Saturday's opening win over Colchester rather than sparkling and the cultured midfielder is convinced an emphasis on ball retention will enhance their cause.
"Possession changed hands quite a lot. It will do that in the Championship. There were a lot of nervous people out there," continued Dunn.
"We could maybe keep it a little better. We have a lot of good players and the team will grow. However, it was a good three points for us."
Bruce is unlikely to make sweeping changes to the side, though there could be an alteration in attack. Bendtner may be drafted in at the expense of Dudley 'DJ' Campbell who is still suffering with a slight groin strain. Forssell is expected to recover from a hamstring strain.
Injuries and Dunn are, hopefully, a thing of his past. The midfielder has suffered more than most with a succession of injuries. Yet, thus far this season he has been firing on all cylinders. Nevertheless, he confesses there is till some way to go.
"Knackered," was his response to the question of how he felt during the closing stages of the Colchester fixture. "I had cramp in both hamstrings and felt tight in both calves but it is another 90 minutes for me, which is important."
Stephen Kelly has been called into the Republic of Ireland squad for next week's friendly with Holland, while Bendtner has been called into Denmark's full squad for trip to Poland next Wednesday.