Super-sub Adam Idah snatched the winner with his first touch of the game as Swansea bravely battled back from a goal down to stun Stoke 2-1.
The Republic of Ireland international had been on the pitch for barely a minute when he scored in the 66th minute as the Swans claimed their first win at the bet365 Stadium for over five years.
Defeat was a bitter bill to swallow for the Potters, especially after Eric Bocat had fired them into a 10th-minute lead.
The defender grabbed his first goal for the club on his 60th league appearance with a deflected left-foot strike.
But Nigeria international midfielder Joseph Opoku snatched a 23rd-minute equaliser for the Swans, powering in with a sweet right-foot shot after some poor defending.
And the hosts' frustrating afternoon went from bad to worse when Idah won it with a smart close-range finish after more questionable defending.
The home side made the best possible start when left-back Bocat fired them ahead.
Svante Ingelsson whipped the ball in from the left wing, Tomas Rigo collected and teed up Bocat who, having turned his marker, unleashed a left-foot shot which was deflected over goalkeeper Lawrence Vigouroux and into the far corner.
But it was not long before the visitors were back on level terms when Opoku took advantage of sloppy defending by the Potters.
Moussa Yeo crossed from the left, Zan Vipotnik got an important flick-on and there was Opoku, unmarked at the back post, to fire home with ease.
Goalscorer Boucat was nowhere to be seen as the 21-year-old summer signing gladly notched his first goal for his new club.
Seven minutes before the break Bosun Lawal attacked a ball at the back post but his header flew high and wide.
Stoke boss Mark Robins made a change at the break with Maksym Talovierov brought on to replace Lawal.
And the hosts started brightly and came within a whisker of scoring a second, but an alert Vigouroux thwarted them with a brilliant save.
Sorba Thomas weaved his way into the box and looked certain to score, but Vigouroux tipped his thunderbolt shot over the crossbar.
That save proved hugely important as the Swans broke on the counter-attack and Idah slotted home with his first touch.
Josh Tymon's cross evaded everyone as the hosts were again caught sleeping and Idah gleefully netted his first goal of the season.
Bocat had a chance to level with six minutes remaining, but his low left-foot drive was saved well by Vigouroux at his near post.
Stoke's Mark Robins:
"We turned the ball over too many times, but we still carried a threat. If we do the basics right then we win that game.
"The real start was today and we needed to be better in those big moments, We had a golden opportunity to score, he (Thomas) just needed to roll it into the net.
"It's a massively disappointing result. We need some players in, but the owners are backing us to the hilt.
"We can't make mistakes like we made though, but we know we've got to get it right. We need to make sure we get those players in who are going to make a difference.
"We have to be better and having some much-needed quality will be welcome. It's all about players, they make the difference. It was a really disappointing result, even though we had some good opportunities."
Swansea's Vitor Matos:
"Sometimes we are lucky with substitutions. It's not always perfect, but today they came and impacted the game and I'm really pleased with that.
"I think it's always about mindset and about mentality on these moments and they were brilliant, all the players coming from the bench and finding a way into the game and to impact that as well.
"I felt the game needed a bit more physicality in the final third and Adam (Idah) is a player who can offer that.
"Our goals showed the identity we want to keep building. I think it was a good game from our side.
"We started well. Stoke are really competitive and it's really hard to come here to play. So on the first situation, they could break our press, they score.
"Then we needed to find a way to grab the game back to us, to put the game where normally we are stronger, we were able to do that, score the equaliser."
