Manager Graham Potter says the buck stops with him for Swansea City's defeat at Derby County as they slid to a third loss in a row.

The home side were assertive and purposeful from the off and they took a 2-0 lead thanks to a brace of superb finishes from Harry Wilson.

The on-loan Liverpool man fired home a serving strike from the edge of the area after 31 minutes, and then coolly finished after seizing on a loose pass from Oli McBurnie.

Swansea rallied during the closing stages, with Fikayo Tomori putting through his own net under pressure from Leroy Fer, but they could not find an equaliser and, truth be told, they would not have merited a point no matter how gratefully it would have been received.

Swansea had retained the 3-4-3 set-up they had used against West Brom in midweek, with Daniel James used in a more central role, but they struggled to exert any control on the game.

They improved as the second half went on after switching back to a 4-2-3-1 shape, and Potter held his hands up and admitted his gameplan had not worked out during the first 45 minutes when the game got away from his side to round off "a bad week".

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"We lacked intensity in the first half but I cannot look at the players for that, I have to look at myself," he said.

"I have to take responsibility for that, we probably were a little too deep and too passive because of how we were set-up.

"And if the intensity was not there it was not because the players did not want to do it.

"Sometimes the set-up makes that happen, so that is something I have to look at and we have to look at.

"It is the third game in a week, you are not sure how to approach it in terms of what you can and cannot do but we have to think about the fact we kept going and had some opportunities.

"But as soon as the goal went in Derby were more deserving of the lead at half-time.

"We have had a bad week and that's what football can do to you, especially in the Championship.

Daniel James of Swansea City walks off the pitch injured.

"We played three good teams, we have a young roup going through a process of finding their way and you cannot short circuit that too much.

"We have to go through some pain and we have to stick together and the fans were with us today even if we did not give them too much and I cannot sit here and complain about the players because they did everything they could.

"But I am disappointed in myself with the first half."

The Swans ended the game with 10 men on the pitch after James limped off with a hamstring problem in the closing stages, but Potter is hopeful the issue will not sideline the winger for next weekend's trip to Brentford.

"He just felt his hamstring," said Potter.

"He has felt it before and when you are a sprinter you can be a bit nervous about it, but he seemed to think he was feeling it more than that anything dramatic had happened."

Potter also confirmed that Wilfried Bony's absence from the matchday squad was not injury related but a need to manage his workload in the early stages of his return from nine months out.