Arsenal boss Mikel Arteta was eager to praise his staff after victory over Crystal Palace.
The Gunners scored twice from set-pieces in the 5-0 win.
Arteta said: Credit to all the coaches, to Nico [Jover, set-piece coach] for the amount of time and belief we put in.
It's got a huge impact - we've seen that as well in recent games that we've lost when we've conceded set-pieces, so the outcome is very different when you don't concede and score.
We wanted to start the second part of the season with a great performance, with a great result, and build that positivity and momentum again, and I think the boys did a good job today."