Manchester United manager Louis van Gaal said his side had been "unlucky" after they lost 2-1 to Swansea and were overtaken by Arsenal for third place in the Premier League table.
United went in front when Ander Herrera rounded off a fine move, but their lead lasted for barely two minutes before Ki Sung-Yueng fired home the equaliser. And in the second half, a Jonjo Shelvey effort deflected off teammate Bafetimbi Gomis and over David De Gea to condemn Van Gaal's men to defeat.
The BBC quoted him as saying: "Of course you can say we dominated the game, but the only thing we could have done more was score more out of the chances we created.
"Today, we were the unlucky team. I think we created enough chances. We were the dominant side in both halves.
"Conceding so quickly after opening the scoring was important. It was a throw-in for Swansea and we should have been more organised, but it was a good goal. Today we played well -- but we have to be more effective."
Official statistics on the Premier League website showed United had 12 shots compared to Swansea's eight, but Van Gaal's men managed only three on target compared to the home team's six.
"It is always frustrating when you lose and you are the dominating team, your disappointment is much bigger because of that,'' Van Gaal added. "In the first half it was an equal game as I counted as many chances for Swansea as we had.
"That was not a big difference, but in the second half it was a big difference. Swansea had a chance in the first minute of the second half and after that we dominated the game.
"Every two minutes we had a chance but we were not effective.''
Van Gaal also bemoaned the nature of Swansea's winner when Gomis unknowingly got in the way of Shelvey's powerful effort.
"They had one counter, the shot deviated, maybe also in an offside position from Gomis, and it was a goal,'' he said.
"Nevertheless we dominated the game even with 10 men when Robin van Persie could not run any more after his injury and I had three substitutes on the field.
"It is amazing we have lost and we have lost only to Southampton in 19 games before this, but you have to pick yourself up and continue.''