Arsene Wenger paid tribute to his new signings after Arsenal beat Manchester City to win the Community Shield at Wembley.
First-half goals from Santi Cazorla and Aaron Ramsey, plus a stunning strike from Olivier Giroud, secured a comprehensive victory for the FA Cup holders to set them up nicely for next weekend's Premier League opener.
Wenger was impressed by the attacking variety in his side but he had special praise for the new boys at the other end of the pitch.
"I must say a special congratulations to our two defenders Debuchy and Chambers," Wenger told Arsenal Player.
"It was an important game in our minds and it can only boost the confidence"
"Chambers was outstanding. He played with a maturity and intelligence that I was really impressed with. Alexis [Sanchez] looked very exciting, very lively but not completely ready yet. He will be very exciting.
"It was a very good game," added Wenger. "I think we started very well, we had a great first half with a lot of variation in our attacking and a lot of togetherness in our defending.
"We could not sustain it completely for 90 minutes, but in the second half when we lost a bit of legs we kept the togetherness and the desire to fight."
"Of course [I take confidence]. It's a trophy. People remind you that you lost a trophy when you lose it and when you win it, it's only the Community Shield. It was an important game in our minds and it can only boost the confidence and the belief of the team.
"Now we have a difficult game with Crystal Palace, it's a London derby, they finished the season well last year so on our side it's an important game. Ideally, I would have loved a bit more time to prepare after the World Cup but we did the best we could and let's hope it will be enough."
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