Blues were left disappointed after leaving Griffin Park with a point that should have been all three.
For the second time in a week, Lee Clark’s side relinquished a leading position but this draw was particularly galling.
Holding a one-goal lead, courtesy of Paul Caddis’ 16th minute penalty, and with Brentford down to ten-men, Blues had a host of chances to put this game to bed before the break.
However, they were pinned back by the battling Bees in the second-half and were eventually stung by substitute Moses Odubajo’s 79th minute equaliser.
Playing the ‘front foot football’ that had served them so well in recent fixtures, Blues made another bright start to proceedings in West London.
And they couldn’t have got off to a better start with a penalty when ex-Brentford man Clayton Donaldson was brought down by Tony Craig.
As defender Craig trudged off having been given his marching orders by referee Robert Madley, Caddis stepped up to send David Button the wrong way and slot his spotkick into the bottom right corner. From that point, Blues looked nailed on their first away victory of the season.
Then came a host of glorious chances. David Cotterill’s excellent cross from the right picked out the head of Wes Thomas from yards out only for his effort to sail over in the 28th minute.
Button was called into action in the 33rd minute to make arguably the save of the season. Cotterill’s corner from the left found Lee Novak who saw his close range header tipped over by a brilliant one-handed save.
The pressure continued; David Davis drilled an 18-yard effort over in the 39th minute before Grant Hall’s solid header just before the break was saved and held low down by Button.
It may be a cliché but this was most certainly a tale of two halves. Brentford came out of the break fighting and Blues struggled to regain their hold on proceedings.
Darren Randolph was called into action in succession to deny Alan Judge and Alex Pritchard shortly after the hour mark as Brentford continued to pressurise the Blues backline.
With Stephen Gleeson on for Donaldson in a bid to regain possession in the middle of the park, Andre Gray came close to an equaliser in the 73rd minute but Randolph was out quick to the striker’s feet from 12 yards out.
Odubajo stepped off the bench in the 74th and took five minutes to make a significant impact. Jonathan Grounds’ slip let the ex-Leyton Orient forward in down the right and he calmly clipped the ball over the onrushing Randolph.