Match ends, Barnsley 1, Norwich City 0.
Callum Styles gave Barnsley a deserved win over Norwich to set up a potential FA Cup fifth-round tie against Chelsea.
The midfielder struck after 56 minutes as the hosts upset the form guide to defeat the Championship leaders.
Norwich came to life late on with Przemyslaw Placheta rattling the bar before Styles made a goal-saving block to deny Emi Buendia.
But the hosts held on to progress to the next round where they will host Chelsea or Luton, who play on Sunday.
The teams went into the game in contrasting form with Barnsley losing their last two and the Canaries flying high at the top of the Championship after winning their last three.
But the hosts made an electric start with Cauley Woodrow and Romal Palmer both testing Tim Krul on his 100th Norwich appearance.
Norwich were forced to soak up plenty of pressure and Michal Helik tested Krul again, before Styles went close and Dominik Frieser saw his dipping volley saved.
The Canaries, without Teemu Pukki and Todd Cantwell, seemed to have weathered the early storm and Max Aarons flashed a long-distance effort over the bar after 38 minutes, but that was the closest they came in the first half.
Barnsley finally made the breakthrough their efforts deserved after 56 minutes when the Canaries failed to deal with Callum Brittain's cross, allowing Styles to swivel before firing low past Krul.
Tykes top scorer Woodrow squandered a fine opportunity to double the lead on the hour when he mistimed his attempt to connect with Frieser's inviting cross.
Norwich eventually found some rhythm as Placheta saw his drive cannon back off the bar, before Styles prevented second-half substitute Buendia from equalising with just over 10 minutes left.
But Barnsley goalkeeper Brad Collins ended the game with his clean sheet intact, Norwich bowing out of the competition after mustering just one shot on target.
Barnsley head coach Valerien Ismael told BBC Radio Sheffield:
"We deserved to win and we are in the next round, that was our purpose. We got the job done and it's a great feeling for the guys.
"It will give us confidence and we will see that it is normal for us to compete at this level. If you don't score the second goal it will be tight until the end and in cup games you need luck on your side.
"We kept Norwich contained and it was exactly our game plan. It was an excellent job. The FA Cup is special and that's why we take the competition very seriously. Whoever our opponent is we will be ready."
Canaries head coach Daniel Farke told BBC Radio Norfolk:
"It was definitely not our best performance and congratulations to Barnsley, they deserved to win. Barnsley away is a difficult game at any time especially at this time of year when the pitch is that bad.
"They totally went for this game they started with more or less their best starting line-up and we decided today we needed to rotate a bit more than we would have done for a league game.
"But it was still a strong starting line-up on the pitch and we wanted to go into the next round. I don't want to criticise my team too much, we had chances to equalise, it was possible to win this game and for that we are disappointed."
Line-ups
Barnsley
Formation 3-4-3
- 40Collins
- 20SibbickSubstituted forSollbauerat 64'minutes
- 30Helik
- 6Andersen
- 7Brittain
- 27Mowatt
- 21PalmerSubstituted forKaneat 45'minutes
- 4Styles
- 28FrieserSubstituted forMillerat 79'minutes
- 9WoodrowSubstituted forSchmidtat 79'minutes
- 29AdeboyejoSubstituted forChaplinat 57'minutes
Substitutes
- 1Walton
- 8Kane
- 11Chaplin
- 19Schmidt
- 22Oduor
- 25Miller
- 26Sollbauer
- 34Moon
- 44Omar
Norwich
Formation 4-2-3-1
- 1Krul
- 2Aarons
- 5Hanley
- 34Gibson
- 19Sørensen
- 27TetteySubstituted forSkippat 63'minutes
- 7RuppSubstituted forVrancicat 77'minutes
- 25HernándezSubstituted forBuendíaat 64'minutes
- 10DowellSubstituted forMartinat 77'minutes
- 11Placheta
- 9HugillSubstituted forOmotoyeat 65'minutes
Substitutes
- 8Vrancic
- 17Buendía
- 20Skipp
- 24Martin
- 26Mumba
- 44Omobamidele
- 50Barden
- 53Omotoye
- Referee:
- John Brooks
Match Stats
- Possession
- Home29%
- Away71%
- Shots
- Home16
- Away6
- Shots on Target
- Home10
- Away1
- Corners
- Home9
- Away7
- Fouls
- Home15
- Away4
Live Text
Post update
Full Time
Second Half ends, Barnsley 1, Norwich City 0.
Post update
Max Aarons (Norwich City) wins a free kick in the defensive half.
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Foul by Callum Styles (Barnsley).
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Offside, Norwich City. Ben Gibson tries a through ball, but Grant Hanley is caught offside.
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Corner, Barnsley. Conceded by Grant Hanley.
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Attempt blocked. Conor Chaplin (Barnsley) left footed shot from the centre of the box is blocked. Assisted by Patrick Schmidt.
Post update
Attempt blocked. Jacob Sørensen (Norwich City) right footed shot from outside the box is blocked. Assisted by Przemyslaw Placheta.
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Hand ball by George Miller (Barnsley).
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Foul by Tyrese Omotoye (Norwich City).
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Mads Andersen (Barnsley) wins a free kick in the defensive half.
Post update
Max Aarons (Norwich City) wins a free kick in the defensive half.
Post update
Foul by Conor Chaplin (Barnsley).
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Emiliano Buendía (Norwich City) wins a free kick in the attacking half.
Post update
Foul by Herbie Kane (Barnsley).
Post update
Oliver Skipp (Norwich City) wins a free kick in the defensive half.
Post update
Foul by George Miller (Barnsley).
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Jacob Sørensen (Norwich City) wins a free kick in the defensive half.
Post update
Foul by Alex Mowatt (Barnsley).
Post update
Corner, Barnsley. Conceded by Tim Krul.

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Comments
Join the conversation
Placheta had a big chance to show what he is capable of today.
Unfortunately he did just that and was shockingly poor. Should have scored two goals. His crosses were awful and dithers too much in possesion. Not a championship standard player.
I’m not a Norwich supporter but I have a ‘soft spot’ for the Canaries
I cliche I know but Norwich can now concentrate on the league and getting promoted back to the Premier League because it is only a matter of time
In closing Barnsley who have been inconsistent in the league deserve credit for the performance and the result
The Canaries must aim to be promoted again hopefully as champions this time to stay in the Premier League
Weird or what.
Up the Tykes