Arsenal boss Arsene Wenger felt his side's opener at Swansea completely changed the context of the game as they ran out 3-0 victors on Saturday.
The Gunners struggled to find their gears in the first half at the Liberty Stadium and they nearly went behind when Bafetimbi Gomis forced Petr Cech into a smart save after the striker had been played through on goal.
But the second half was a totally different affair as the visitors broke the deadlock through Olivier Giroud just four minutes after the restart and they went on to record a comfortable win as Laurent Koscielny (68) and Joel Campbell (73) added further goals.
Wenger had made numerous changes to his team for the trip to Wales and he admitted his players took while to settle down, but once they took the lead there was only ever going to be one outcome.
"It is always a difficult game," he told the media after the match. "We were a bit edgy [in the first half] but in fairness Swansea showed quality again today. They are maybe going through a spell where they have less confidence but they are a good side.
"In the first half, it was difficult but in the second half we upped our purpose, our tempo and had more purpose in our passing, with pace in our combinations. Once we scored the first goal we were the dominant team and won the game normally.
"We had a difficult first half but we came through it. I rested eight players on Wednesday and gave them a little breather this week, and it took us a little while to get into the tempo of the game.
"I am pleased because we could keep a clean sheet during the difficult moments of the game and you are never in a hurry to take too many risks going forward. Once we scored the first goal it was a completely different game."