TEN-man Birmingham failed to reclaim a spot in the automatic promotion places after being held to a goalless draw by a dominant Swansea side.
The visitors, having drawn their last seven successive matches in the Coca-Cola Championship, enjoyed the better of the 90 minutes with Mark Gower, Darren Pratley and substitute Jason Scotland proving to be a constant menace.
Jordi Gomez forced a good save from Maik Taylor in the first half while Kevin Phillips blasted wide from close range for a Birmingham side who struggled to find a constant rhythm.
Scotland spurned a series of opportunities after the break while Febian Brandy was also guilty of missing two excellent chances as the hosts relied on some desperate defending after David Murphy saw red in the 68th minute for a second bookable offence.
The point means Blues remain third after promotion rivals Reading were held to a second successive draw at Southampton, while Swansea drop one place to 11th.
Blues reverted back to a 4-4-2 formation for the encounter, with Phillips and Marcus Bent once again leading the line and Cameron Jerome and Kemy Agustien on the bench.
Roberto Martinez also made changes up front while opting to play 4-5-1. Gorka Pintado was brought in as the lone striker with Gower also named in the starting XI. Scotland and Thomas Butler were among the substitutes.
But Swansea showed they were not to be overawed in the opening stages and took the game to Alex McLeish's high-flying Birmingham.
The visitors were enjoying plenty of joy down their left-hand channel and were
using that to good effect, with Gower, Pratley and Angel Rangel all firing wide from distance.
The home side started to gain a slight foothold on the game as the first half wore on and Phillips fired a great chance wide of the target from only six yards after 22 minutes.
But the Swans were not lacking confidence as the game started to open up.
Taylor had to be alert to divert a Gomez effort wide that bounced awkwardly just in front of him as the away side again started to impose themselves on the contest prior to the interval.
Birmingham started the second half keen to make amends for their lacklustre display in the opening 45 minutes, but their Welsh opponents refused to allow them any time to impose their authority - keeping possession well and passing the ball around in a confident manner.
The lively James McFadden, who impressed throughout, roused a frustrated home crowd with his attacking intent as the half wore on.
Bent then headed inches over just before the hour mark before Radhi Jaidi flung himself in the way of Scotland's goalbound effort to keep the scores goalless.
The chance gave the Swans a new lease of life and they again rallied for the opener before matters went from bad to worse for Blues as Murphy was shown a second yellow card for bringing down Gomez.
Birmingham refused to settle for a point despite their numerical disadvantage and substitute Cameron Jerome fired just wide while Scotland miscued his chance at the other end.
Scotland then missed further opportunities to find the breakthrough while Brandy also wasted two great chances in the final 10 minutes.
But it was not to be as both sides had to settle for a point.