Substitute Wilfried Bony's brace helped Premier League Swansea come from behind to beat Birmingham City in the FA Cup fourth round at St Andrew's.

The Championship side, who knocked the Swans out of the League Cup in September, took an early lead when Lee Novak rose to head Paul Caddis' cross past Gerhard Tremmel and into the net.

Bony's first-time shot from Roland Lemar's centre levelled the scores.

The Ivorian then chipped Blues keeper Colin Doyle to send the Swans through.

Both sides went into the match in poor form with their only wins of 2014 coming in this competition.

Birmingham, who are 17th in the Championship, knocked out League Two Bristol Rovers to set up the tie with Swansea, who had disposed of Manchester United in the last round.

That famous win at Old Trafford for the Swans is their only victory this year and they are just three points above the relegation zone in 15th.

They now face a run of four league matches against other struggling teams, including Welsh rivals Cardiff.

Reports of training ground rows at the club have also surfaced, forcing players this week to deny there is a rift in the squad .

Did you know?

Swansea's Wilfried Bony has scored six goals in his last five games for Swansea

Laudrup has stressed that the Premier League is a priority for the Swans and made five changes for the trip to St Andrew's leaving out top-scorer Bony.

Swansea lacked invention going forward in the opening 45 minutes and struggled to get their passing game going on a wet and heavy pitch.

Birmingham pounced on numerous loose passes, launching quick and effective attacks and took a 15th-minute lead through Novak.

A shock looked likely and moments later, Swansea captain Ashley Williams had to clear off the line from Novak after goalkeeper Tremmel spilled the ball.

Jordi Amat missed Swansea's best chance of the half, shooting the ball over the from just five yards out.

But when Laudrup sent on Bony the Swans started to build some pressure and the striker's double in two minutes turned the tie around.

The hosts attempted to fight back with Swansea's Leon Britton forced to clear a shot off the line following Tom Adeyemi's surging run and shot.

But the Swans held on to reach the fifth round of the competition for the first time in five years.

Birmingham City manager Lee Clark:

"Bony is in very good form at the highest level, I watched him over the last few games and he looked very in-form.

"You know you have that to contend with if you get in front.

"His first goal was very good but the second goal we could have done more to prevent.

"You always need that second goal against a Premier League team especially with their fire power, we had chances, but we weren't able to take them."

Swansea City manager Michael Laudrup:

"He [Bony] scored the two goals so you can say he turned the game for us, but I think the reaction from the team second half is very important.

"In our situation you want to have a win.

"A lot of players first half played much too tense and if you play and you are too tense it is very difficult to play.

"Second half we came out much more relaxed and we saw a bit more of what we are capable of."

Lineup, Bookings (2) & Substitutions (4)

Birmingham City

  • 13 Doyle
  • 31 Caddis
  • 18 Hancox
  • 20 Lee Booked (Lovenkrands - 81' )
  • 14 Packwood
  • 04 Robinson Booked
  • 07 Burke
  • 29 Brown
  • 35 Rusnak
  • 12 Novak
  • 27 Ferguson (Adeyemi - 74' )

Substitutes

  • 08 Mullins
  • 10 Howard
  • 11 Lovenkrands
  • 17 Reilly
  • 24 Adeyemi
  • 30 Townsend
  • 33 Gray

Swansea City

  • 25 Tremmel
  • 19 Tiendalli
  • 03 Taylor
  • 07 Britton
  • 04 Chico
  • 06 Williams
  • 11 Hernández (Bony - 45' )
  • 02 Amat
  • 26 Alvaro (Routledge - 64' )
  • 14 Lamah
  • 24 Pozuelo

Substitutes

  • 10 Bony
  • 13 Cornell
  • 15 Routledge
  • 29 Richards
  • 31 Lucas
  • 33 Davies
  • 41 Donnelly
Ref: Neil Swarbrick
Att: 11,490

Match Stats

Shots

8 6

On target

3 3

Corners

9 1

Fouls

10 12

Live Text Commentary

Full time

Full Time Match ends, Birmingham City 1, Swansea City 2.

90:00 +4:22 Full time

Full Time Second Half ends, Birmingham City 1, Swansea City 2.

90:00 +3:00

Foul by Paul Caddis (Birmingham City).

90:00 +3:00

Wilfried Bony (Swansea City) wins a free kick in the defensive half.

90:00 +2:00

Paul Robinson (Birmingham City) wins a free kick in the attacking half.

90:00 +2:00

Foul by Wilfried Bony (Swansea City).

89:24

Attempt saved. Tom Adeyemi (Birmingham City) right footed shot from the right side of the box is saved in the centre of the goal.

86:22

Corner, Birmingham City. Conceded by Wilfried Bony.

86:02

Corner, Birmingham City. Conceded by Ashley Williams.

84:54

Corner, Birmingham City. Conceded by Leon Britton.

82:57

Corner, Birmingham City. Conceded by Chico.

82:03

Mitch Hancox (Birmingham City) wins a free kick in the defensive half.

82:03

Foul by Wayne Routledge (Swansea City).

80:37 Substitution

Substitution Substitution, Birmingham City. Peter Løvenkrands replaces Oliver Lee.

77:00

Paul Robinson (Birmingham City) wins a free kick on the right wing.

76:54

Foul by Wilfried Bony (Swansea City).

74:16

Attempt blocked. Lee Novak (Birmingham City) right footed shot from outside the box is blocked.

73:10 Substitution

Substitution Substitution, Birmingham City. Tom Adeyemi replaces Shane Ferguson.

72:48

Chris Burke (Birmingham City) wins a free kick in the attacking half.

72:48

Foul by Wayne Routledge (Swansea City).

71:30

Albert Rusnák (Birmingham City) wins a free kick in the defensive half.

71:30

Foul by Álex Pozuelo (Swansea City).

70:11

Foul by Paul Robinson (Birmingham City).

70:11

Wilfried Bony (Swansea City) wins a free kick in the attacking half.

69:15

Reece Brown (Birmingham City) wins a free kick in the defensive half.

69:15

Foul by Jordi Amat (Swansea City).

68:41 Goal scored

Goal! Goal! Birmingham City 1, Swansea City 2. Wilfried Bony (Swansea City) left footed shot from the centre of the box to the top left corner. Assisted by Leon Britton.

66:44 Goal scored

Goal! Goal! Birmingham City 1, Swansea City 1. Wilfried Bony (Swansea City) left footed shot from the centre of the box to the bottom left corner. Assisted by Roland Lamah.

63:11 Substitution

Substitution Substitution, Swansea City. Wayne Routledge replaces Álvaro.

62:03

Corner, Birmingham City. Conceded by Ashley Williams.

61:27

Attempt saved. Wilfried Bony (Swansea City) right footed shot from the right side of the box is saved in the bottom right corner.

51:00

Chris Burke (Birmingham City) wins a free kick on the left wing.

51:00

Foul by Neil Taylor (Swansea City).

48:37

Corner, Swansea City. Conceded by Paul Caddis.

47:47

Attempt missed. Oliver Lee (Birmingham City) right footed shot from outside the box is too high.

45:00

Second Half begins Birmingham City 1, Swansea City 0.

45:00 Substitution

Substitution Substitution, Swansea City. Wilfried Bony replaces Pablo Hernández.

45:00 +3:13 Half time

Half Time First Half ends, Birmingham City 1, Swansea City 0.

45:00 +2:27

Corner, Birmingham City. Conceded by Leon Britton.

45:00 +2:03

Corner, Birmingham City. Conceded by Gerhard Tremmel.

45:00 +1:34

Attempt saved. Mitch Hancox (Birmingham City) right footed shot from outside the box is saved in the top centre of the goal.

43:51

Attempt blocked. Albert Rusnák (Birmingham City) right footed shot from outside the box is blocked.

42:52

Reece Brown (Birmingham City) wins a free kick in the defensive half.

42:52

Foul by Jordi Amat (Swansea City).

40:42

Attempt missed. Jordi Amat (Swansea City) right footed shot from the centre of the box is just a bit too high.

39:54

Foul by Will Packwood (Birmingham City).

39:54

Álex Pozuelo (Swansea City) wins a free kick in the attacking half.

39:33

Foul by Albert Rusnák (Birmingham City).

39:33

Álex Pozuelo (Swansea City) wins a free kick on the right wing.

36:35 Booking

Booking Paul Robinson (Birmingham City) is shown the yellow card.

36:00

(Swansea City) wins a free kick in the attacking half.

35:43

Foul by Paul Robinson (Birmingham City).

34:51

Corner, Birmingham City. Conceded by Jordi Amat.

33:07

Attempt missed. Reece Brown (Birmingham City) right footed shot from outside the box misses to the left.

30:46 Booking

Booking Oliver Lee (Birmingham City) is shown the yellow card.

30:39

Foul by Oliver Lee (Birmingham City).

30:39

Álex Pozuelo (Swansea City) wins a free kick in the attacking half.

29:40

Attempt missed. Chris Burke (Birmingham City) right footed shot from outside the box misses to the left.

28:41

Hand ball by Reece Brown (Birmingham City).

24:44

Attempt blocked. Roland Lamah (Swansea City) right footed shot from outside the box is blocked.

24:07

Attempt missed. Pablo Hernández (Swansea City) right footed shot from the right side of the box is just a bit too high.

14:01 Goal scored

Goal! Goal! Birmingham City 1, Swansea City 0. Lee Novak (Birmingham City) header from the centre of the box to the bottom left corner. Assisted by Paul Caddis with a cross.

12:40

Foul by Paul Robinson (Birmingham City).

12:40

Álex Pozuelo (Swansea City) wins a free kick in the defensive half.

11:05

Mitch Hancox (Birmingham City) wins a free kick in the defensive half.

11:05

Foul by Dwight Tiendalli (Swansea City).

9:30

Foul by Jordi Amat (Swansea City).

9:30

Chris Burke (Birmingham City) wins a free kick in the defensive half.

7:26

Foul by Leon Britton (Swansea City).

7:26

Albert Rusnák (Birmingham City) wins a free kick in the attacking half.

5:00

Chico (Swansea City) wins a free kick in the attacking half.

4:56

Foul by Will Packwood (Birmingham City).

4:39

Corner, Birmingham City. Conceded by Chico.

4:02

Jordi Amat (Swansea City) wins a free kick in the attacking half.

4:02

Foul by Reece Brown (Birmingham City).

0:45

Foul by Jordi Amat (Swansea City).

0:45

Reece Brown (Birmingham City) wins a free kick in the attacking half.

0:00

First Half begins.

0:00

Lineups are announced and players are warming up.

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