Swansea manager Michael Laudrup was left to rue his side's profligacy in front of goal as they failed to turn dominance into victory in their 2-2 draw with Aston Villa.
Swansea should have heaped further misery on Villa after taking the lead through Wayne Routledge and created countless other chances during the opening 30 minutes.
But a fine Andreas Weimann finish and Christian Benteke's penalty put relegation-threatened Villa on course to take all three points, only for Danny Graham to salvage a point for the hosts in stoppage time.
"We did not win because we only scored one goal from seven chances with that first-half performance," said Laudrup.
"It was a great performance - it could have been 4-0 after 12 minutes - but we know how it is when you don't take chances.
"It means one mistake, one free-kick, one corner or whatever it is and the game is back level, and that is what happened at the end of the first half.
"They had only been near our goal two or three times in the first 45 minutes and we gave Villa belief they could come from behind and get something out of the game.
"If we had got a second or third we would maybe be sitting here talking about a 5-0 win."
Laudrup was also disappointed his side were not awarded a penalty just before the hour mark.
Joe Bennett was penalised for handball on the left-side of his own area as he blocked Angel Rangel.
But referee Mark Halsey only awarded Swansea a free-kick on the edge of the box when the ball had appeared to strike Bennett just inside.
When asked if he thought it was a penalty, Laudrup said: "Yes of course, both of his feet are on the line and the hand is inside, I think the line is still part of the box so there was no doubt about it.
"It was a clear penalty but it was not given and that's that, we have to go on."
For Villa the draw ended a miserable run of defeats which had seen them concede 15 goals and score none in the three games prior to their visit to south Wales.
Lambert had his head in his hands when Graham found the net, but put a brave face on the disappointment to describe the result as a huge point in his side's battle against the drop.
He said: "It is a huge point although we should have seen it through.
"We have been beaten heavily in the last three games so this is a huge point for the future of the club.
"The young lads in the side have been excellent and when you get beaten heavily you learn a lot about people and they showed they are mentally strong."