Norwich City were beaten in injury time by Middlesbrough, with Matt Crooks scoring a late winner at Carrow Road.
Josh Sargent gave the Canaries the lead in the first half, firing into the bottom corner from Kenny McLean's pass.
Boro equalised in the second half through Riley McGree, who volleyed into the top corner.
And Crooks' late winner meant Norwich would fall to defeat against Michael Carrick's side.
Dean Smith named an unchanged side from last week's win away at Rotherham United. Marcelino Núñez returned to the bench, replacing Kieran Dowell.
The visitors would register the first attempt on goal, as Chuba Akpom headed over the crossbar from Tommy Smith's cross.
Norwich's first chance of the game fell to Teemu Pukki. Aaron Ramsey did very well to turn his marker and burst forward. He found Pukki, whose effort was saved well by the feet of Zack Steffen.
The Canaries found the opener shortly after. Sargent was found by Kenny McLean, and the American slotted beyond his fellow countryman Steffen.
Ramsey was next to threaten for Norwich, firing from the edge of the box. Steffen got a hand to the effort, before Middlesbrough eventually cleared their lines.
Gabriel Sara would come close to a second Norwich goal, attempting a flick from McLean's knockdown but it could only find the side-netting.
City started the second half on the front foot, and Sargent's strike from 20 yards forced Steffen into a smart stop.
Middlesbrough would equalise through McGree, whose volley gave Angus Gunn no chance as it flew into the top corner.
Gunn was then forced into a save, getting down quickly to deny Akpom's header.
The Canaries had two chances in as many minutes as they went in search of a goal to put them in front. First, Sara's effort was well saved, before Max Aarons' venomous effort was just wide of the post.
Norwich continued their search, and poured forward. Onel Hernández did well to weave beyond a defender, but his shot was easy enough for the goalkeeper.
But it would be Middlesbrough who would claim all three points. Crooks came off the bench to score a late winner for the visitors.
Norwich City: Gunn, Aarons, Hanley, Gibson, McCallum (Giannoulis 70), Hayden, Sara (Núñez 83), Ramsey (Cantwell 70), Pukki (Hernández 62), McLean, Sargent (Hugill 83).
Subs not used: Krul, Gibbs.
Goals: Sargent (7)
Middlesbrough: Steffen, Jones (Dijksteel), Giles, Fry, McGree (Crooks 88), Smith, Howson, Forss (Hoppe 74), Lenihan, Akpom (Muniz 90), Hackney.
Subs not used: Roberts. Mowatt, McNair.
Goals: McGree (63), Crooks (90)
Bookings: Lenihan (22), Forss (40)
HT: 1-0
FT: 1-2
Venue: Carrow Road
Referee: Leigh Doughty
Attendance: 26,673
Golden Goal:
Goal 1 - 06:59
Goal 2 - 63:18
Goal 3 - 90:00
Today's Lucky Number is 3932 with the prize being a retail voucher for £250.