Tom Ramasut spoke after the game as Omer Riza was unable to do his media following his red card.
Cardiff assistant coach Tom Ramasut:
"It was pretty cagey, we probably gave them too much time in the first 20 minutes. We had a few tweaks and it allowed us to put some pressure on them.
"We went into half-time and there was momentum growing in our favour. You could just sense in the dressing room there was a real momentum and real belief going into the second half.
"If you show that fight and togetherness, then we have plenty of quality to win the game. That's exactly what Callum Robinson did with some unbelievable touches to finish."
And Tom spoke about Omer Riza
"It's been an increasingly difficult week. Omer drove back home on Wednesday to spend some time with his father.
"He took training on Thursday, did the (pre-match) media, signed Yousef (Salech), and drove back home to spend the last moments with his father. He then drove back down and prepared for the game on Friday.
"What's been such a warming feeling is the support he's had from the players and staff - the togetherness we've shown - and he's taken a lot of comfort from that."
Swansea head coach Luke Williams:
"I feel very disappointed that we started the game fine and then the performances just evaporate, fall off the edge of a cliff. That's really upsetting, really worrying. I believe it's the occasion.
"We have failed to perform at a consistent level but today, the stark change in our performance from probably half an hour in, we started to lose a grip of the game, we started to give away a lot of corners and free-kicks and then we suffered so badly.
"So many players suffered so badly and got worse as the game went on… I imagine it's a lot of to do with the atmosphere. I think the opposition could feel that and did a brilliant job to heap pressure on us when we felt weak."