Josh Key says Swansea City will be inspired by a trip to the Stadium of Light this weekend even if the pressure for points has eased after back-to-back home victories.
Swansea looked to have wiped out any relegation concerns with five games left this season having reached 51 points thanks to Wednesday's win over Plymouth Argyle.
The resounding 3-0 triumph against Plymouth followed an ugly 1-0 success against a physical Derby County side last weekend.
Swansea now turn their attention to one of the division's top clubs, with Sunderland – who have lost just one home league game all season - likely to be backed by a crowd of more than 40,000 when they host Alan Sheehan's team on Saturday (15:00 BST).
The fourth-placed Black Cats, who are nine points adrift of the automatic promotion places, look set for the play-offs unless something remarkable happens in what remains of the regular campaign.
"Sunderland are a very good team but I think the atmosphere there will drive us," said Swansea right-back Key.
"I think the last two results have taken a lot of pressure off us - we have a free hit almost at the weekend.
"We know they are going to be a very similar team to us in terms of how they transition and attack quickly.
"But we have to take our confidence into Sunderland and show our best again."