West Bromwich Albion head coach Ryan Mason says it was 'small details' that made the difference in his side's narrow loss away to Middlesbrough.
A goal conceded from a set-piece in the first half and then one in the second after Albion's best spell of the game left then with too much to do, despite a late consolation from Norway striker Aune Heggebo.
"A disappointing result. The small details dictated how the game went," Mason told BBC WM.
"Their goal from a set-play was disappointing, I didn't feel like they created a great deal but they scored at good times and made it tough for us to break them down.