Swansea boss Russell Martin heaped praise on his players for the manner in which they came back from 3-0 down at half-time to earn a point in their 3-3 draw at Luton.
The visitors had seen Luke Berry and Elijah Adebayo's double put the Hatters in ascendancy at the break, before Jamie Paterson and Olivier Ntcham made it 3-2, with Joel Piroe netting a stoppage-time leveller.
Martin said: "The first half was nowhere near where we want to be, nowhere near where we have been in the last two games.
"I'm really disappointed with how it went and the beauty of the process is we'll learn from it, it can't happen again, it won't happen again.
"We spoke about Luton's threat, the aggression they come out with, being able to cope with that, we didn't cope with it at all.
"It is what it is, but the second half, incredible. I'm so grateful to the guys, so proud of them.
"The guys who came on had a big impact and the guys who were already on the pitch and feeling the pain, that took some real courage to dig in and to play that way.
"We were outstanding and we should have won it with that chance at the end.
"It was attack versus defence second half, the players took the responsibility, they showed how much they believe in each other and we had our best players on the pitch.
"The fans were incredible, even when we were 3-0 down they could sense just after half time, they really energised the team and they deserve the second half.
"They definitely didn't deserve the first half, so I'm pleased we could do that for them."
Luton had dominated the opening 45 minutes, Berry scoring a wonderful flying volley on seven minutes, before Harry Cornick was clipped in the area by Kyle Naughton eight minutes later and Adebayo dispatched the spot-kick.
The Town striker then tapped home after a superb move involving Kal Naismith and James Bree, before missing a one-on-one with half an hour gone.
After the break, Cornick hit the post when clean through as City mounted a comeback with Paterson and Ntcham firing past Simon Sluga from outside the box, both via a deflection.
Then in stoppage time, Piroe completed the comeback.
Luton boss Nathan Jones said: "We were frustrated we were only three up at half time, we should have been out of sight.
"Elijah's gone through at three nil, Harry Cornick hits the post when clean in and the game should have been put to bed.
"But when you don't do that it gives you hope and then they've come into it and got three goals and that's really disappointing.
"We looked dead on our feet, we've had two big away journeys and I haven't been able to make a load of changes.
"We've had no benefit whatsoever of having two away journeys as when we come back to play here, we haven't been able to do any work and that's tough.
"Today I thought for an hour we were excellent, the first half was as good a defensive pressing performance as you'll see.
"We could have had far more than we did and that's the only thing, but we didn't think we'd need more than three to win a game."
