Birmingham beat Wrexham to end a three-game losing streak, and inflict more damage on Phil Parkinson's side's play-off hopes.
Carlos Vicente headed Birmingham ahead early in the second half having been denied while one-on-one to end the first half.
Blues captain Christoph Klarer doubled their lead, poking home a corner kick at the back post.
Wrexham remain four points outside the Championship play-off places in seventh, while Birmingham climb two places to 15th.
Birmingham 1-0 Wrexham
Barry Horne
Former Wrexham and Birmingham City midfielder on BBC Radio Wales
At least there's someone going in-behind Kieffer Moore now. It was Josh Windass on this occasion, putting pressure on.
Birmingham 1-0 Wrexham
Incidentally, if it stays like this, Wrexham will be four points off sixth-placed Hull City with four games each left.
Kieffer Moore definitely has more support up top since the changes but still little attacking impact from the visitors as Callum Doyle overhits a ball forward into the arms of James Beadle.
Birmingham 1-0 Wrexham
Simon Davies
BBC Radio Wales commentator
Attack-minded subs from Phil Parkinson, an indication that he feels this is a game that they need to get points from.
That's an obvious statement, but there's no caution here.
Birmingham 1-0 Wrexham
August Priske goes down in the box under pressure from Dan Scarr and the Dane theatrically throws himself to the ground.
The crowd want a penalty but David Webb wasn't fooled and waves play on.
Birmingham 1-0 Wrexham
Sure enough, here come Josh Windass and Nathan Broadhead.
Skipper Matty James and Ollie Rathbone the men hooked.
Birmingham 1-0 Wrexham
Half a chance for Jay Stansfield as he fashions some space on the edge of the area but can only whip a powerful shot over.
Looks like Phil Parkinson has seen enough here, there's activity on the Wrexham bench.
Birmingham 1-0 Wrexham
Wrexham enjoying a prolonged spell of possession which culminates in frustration as Lewis O'Brien runs in behind only to be caught offside.
Birmingham 1-0 Wrexham
Image source, BBC SportBirmingham 1-0 Wrexham
First sign of a riposte from Wrexham as Ollie Rathbone has a shot blocked on the edge of the area.
Surely, Josh Windass won't stay seated for long.
Birmingham 1-0 Wrexham
Barry Horne
Former Wrexham and Birmingham City midfielder on BBC Radio Wales
I'm not entirely convinced that Arthur Okonkwo couldn't have done better with that.
He's placed it just inside the post. Okonkwo's starting position is good but I don't know if he should do better there.
Birmingham 1-0 Wrexham
A reminder Wrexham have scored in every away game they have played in during 2026.
They'll need to keep that run going or their play-off hopes will be hanging by a thread come 2pm this afternoon.
Since the goal, there has been little sign of a swift response.
Birmingham 1-0 Wrexham
Ian Mitchelmore
BBC Sport Wales at St Andrews, Birmingham
He missed a great chance from a one-on-one situation just before the break, but that's a magnificent header from Carlos Vicente.
That's his third goal for the Blues since joining from Alaves in January.
Carlos Vicente
What a header!
Kai Wagner delivers a cross from the left and Carlos Vicente takes advantage of some static defending to attack the back post and plant a header high into the net.
Arthur Okonkwo got a hand to it but this time, could not keep it out. Arguably the keeper should have done better there.
That as got the home crowd going again!
Image source, Getty ImagesUse the 'Send us your views' box
Shocking stats from Wrexham, they just cannot put a 90 minute performance together, and herein lies the problem!
Russ, Llandudno
Birmingham 0-0 Wrexham
Right, let's hope a bit more Sunday fun in this half as Birmingham get us going again
No changes for Wrexham - something which will surely soon change if the game continues in the same vein.
On that note, Nathan Broadhead and top scorer Josh Windass were warming-up vigorously for the visitors during the interval.
HT: Birmingham 0-0 Wrexham
A change for the Blues with Seung-ho Paik coming on before kick-off for John Solis.
HT: Birmingham 0-0 Wrexham
Image source, BBC SportHT: Birmingham 0-0 Wrexham
Barry Horne
Former Wrexham and Birmingham City midfielder on BBC Radio Wales
I think the biggest point is that Wrexham have got better as the game has gone on.
Birmingham started like a house on fire, they were all over Wrexham and were creating chances.
They had four or five chances before Wrexham laid a glove on them.
HT: Birmingham 0-0 Wrexham
Image source, Getty ImagesMatty James might be involved today but he has revealed he is still suffering the effects of the toe injury in February that left him sidelined for two months.
But the 34-year-old made his long-awaited return to action against Southampton last time out, and has pledged to play through the pai barrier in Wrexham's play-off bid.
"It's been a bit of a downer for me because my injuries over my career have been pretty bad," he said.
"I think that, when I get one, it brings a lot of bad memories back for me.
"I'm really pleased to be back out there and hopefully now I can stay fit for the rest of the season and try and help the team the best I can whenever the gaffer selects me."
HT: Birmingham 0-0 Wrexham
Simon Davies
BBC Radio Wales commentator
I don't think Phil Parkinson will be too disappointed with the scoreline at half-time considering how Birmingham started the game.
But Wrexham have finished the first half in a much more encouraging way.
The reverse fixture between Wrexham and Birmingham City at Stok Cae Ras on 3 October ended 1-1
Birmingham City ended their three-game losing run by beating Wrexham at St Andrew's to dent the Welsh side's Championship play-off hopes.
Carlos Vicente's header - his third goal for the Blues since joining from Alaves in January - put the hosts ahead shortly after half-time.
Christoph Klarer netted Birmingham's second from a corner as Chris Davies' side - who rise to 15th in the table - earned just a second victory in nine matches.
Defeat leaves Wrexham in seventh, four points adrift of the top six with four matches of the regular season left to play.
The needle between the sides - who both earned automatic promotion from League One last season - was evident during what was at times a feisty encounter.
But it was Davies' men who were on the front foot from the outset as Tomoki Iwata, August Priske and Ibrahim Osman all had efforts early on.
Having survived that early pressure, Wrexham grew into the contest without troubling Birmingham goalkeeper James Beadle.
The Blues' best chance fell to Vicente in the final seconds of the opening half, although his shot was brilliantly smothered by Wrexham goalkeeper Arthur Okonkwo to ensure the score remained level at the break.
Vicente was not to be denied three minutes after the restart though as the Spanish winger headed Kai Wagner's cross into the net, despite the best efforts of Okonkwo.
Wrexham had scored in 10 successive away league games prior to the trip to the Midlands, and Phil Parkinson turned to Nathan Broadhead and joint-top scorer Josh Windass to give his side a chance of extending that run.
But the home side extended their lead from a corner on 71 minutes as captain Klarer poked substitute Paik Seung-Ho's delivery into the net at the back post.
Birmingham saw out the latter stages with minimal fuss to earn a victory that will ease some of the mounting pressure on boss Davies, leaving Wrexham with it all to do in their quest to secure a top six finish in the process.
Wrexham AFC
Birmingham City FC
Birmingham City won for the first time since beating Queens Park Rangers on 11 March
Birmingham flew out of the traps and - for long periods of the game - looked like the side who were gunning for a top six place.
They would have been hugely disappointed not to have been ahead at half-time, although they remained on top after the restart and deservedly took all three points in the end.
It will no doubt have proven immensely satisfying for head coach Davies given his side's recent run, with some fans raising concerns over his methods of late.
As for Wrexham, they got what they deserved. Nothing.
Their first touch in the Birmingham box came on the half hour mark, and they failed to register a single shot on target throughout the match.
Their xG (expected goals) was just 0.08, typifying their lack of creativity against the Blues.
Wrexham are no strangers to drama, and you simply cannot rule them out of finishing in the top six just yet.
Although, having lost back-to-back league games for the first time since the opening two games of the campaign, their chances are now significantly slimmer than they were just a few weeks ago.
Birmingham City head coach Chris Davies:
"I really enjoyed watching the team today, I thought we were excellent throughout.
"When the opposition doesn't have a shot on goal and we had so many chances, that says everything I think.
"I just like the way we played forward more rather than recycling it."
Wrexham manager Phil Parkinson:
"We came here today expecting Birmingham to play direct and go into the front quickly, which they did at Ipswich, and we were prepared for that.
"I thought first half, it was a competitive game and we handled those situations well. We lacked a bit of patience when we had possession in the top third of the pitch and made the wrong decision on a few occasions.
"We were right in the game, and we're just so disappointed with the goals we've conceded today because out of nothing, two moments have been really costly for us."
After the opportunity to rate players has closed, the score displayed represents the average from all the submissions by BBC Sport users.
| Team | Played | Won | Drawn | Lost | Goals For | Goals Against | Goal Difference | Points | Form, Last 6 games, Oldest first |
|---|---|---|---|---|---|---|---|---|---|
| 42 | 25 | 10 | 7 | 84 | 42 | 42 | 85 |
| |
| 40 | 21 | 12 | 7 | 71 | 40 | 31 | 75 |
| |
| 42 | 21 | 10 | 11 | 56 | 47 | 9 | 73 |
| |
| 42 | 20 | 12 | 10 | 62 | 42 | 20 | 72 |
| |
| 41 | 19 | 12 | 10 | 70 | 50 | 20 | 69 |
| |
| 42 | 20 | 8 | 14 | 64 | 60 | 4 | 68 |
| |
| 42 | 17 | 13 | 12 | 63 | 60 | 3 | 64 |
| |
| 42 | 18 | 9 | 15 | 61 | 53 | 8 | 63 |
| |
| 42 | 17 | 7 | 18 | 55 | 50 | 5 | 58 |
| |
| 42 | 16 | 10 | 16 | 52 | 51 | 1 | 58 |
| |
| 42 | 16 | 10 | 16 | 58 | 63 | -5 | 58 |
| |
| 42 | 14 | 15 | 13 | 52 | 51 | 1 | 57 |
| |
| 42 | 14 | 15 | 13 | 50 | 53 | -3 | 57 |
| |
| 42 | 16 | 9 | 17 | 50 | 54 | -4 | 57 |
| |
| 42 | 15 | 11 | 16 | 51 | 52 | -1 | 56 |
| |
| 42 | 15 | 10 | 17 | 49 | 46 | 3 | 55 |
| |
| 42 | 16 | 6 | 20 | 59 | 59 | 0 | 54 |
| |
| 42 | 12 | 13 | 17 | 39 | 51 | -12 | 49 |
| |
| 42 | 12 | 12 | 18 | 38 | 50 | -12 | 48 |
| |
| 42 | 11 | 13 | 18 | 42 | 56 | -14 | 46 |
| |
| 41 | 11 | 12 | 18 | 41 | 57 | -16 | 45 |
| |
| 42 | 10 | 14 | 18 | 41 | 54 | -13 | 44 |
| |
| 42 | 11 | 14 | 17 | 54 | 64 | -10 | 41 |
| |
| 42 | 1 | 11 | 30 | 25 | 82 | -57 | -4 |
|
Manager: Chris Davies
Formation: 4 - 2 - 3 - 1
Manager: Phil Parkinson
Formation: 3 - 4 - 2 - 1
Manager: Chris Davies
Formation: 4 - 2 - 3 - 1
Manager: Phil Parkinson
Formation: 3 - 4 - 2 - 1
Championship
All competitions
All competitions
All competitions
Since losing their first ever league meeting with Wrexham in October 1979, Birmingham are now unbeaten in their last six against them (W3 D3).
All three of Wrexham’s league defeats against Birmingham have come in their three visits to St Andrew’s, with the Red Dragons conceding 10 goals in the process.
Birmingham City have picked up just four points in their last eight league games (W1 D1 L6), finding the net just four times in that run. At home, they’ve lost two of their last four (W1 D1), more than in their previous 41 combined (W29 D11 L1).
Wrexham have won eight of their 20 away Championship games this season (D7 L5) and are only the third newly promoted side in the last eight seasons to achieve that total, along with Sunderland in 2022-23 (11) and Ipswich Town in 2023-24 (12).
In the last two seasons, only Finn Azaz (41 - 23 goals, 18 assists) has been involved in more Championship goals than Josh Windass (35 - 25 goals, 10 assists), with the Wrexham man scoring 12 goals and assisting five this season for the Red Dragons.
