Crystal Palace played well in the march just that their midfield, defend and the keeper was not strong enough in the match. Oleksandr Zinchenko scored the first goal and assisted by Gabriel Martinelli at 20 minutes of the game. Granit Xhaka got a yellow card at 44 minutes. Ben White got a yellow card at 60 minutes. Nathaniel Clyne got a yellow card at 64 minutes. Marc Guehi scored the second goal at 85 minutes of the game.
It sems like that arsenal was winning the game easily, as an opening match and it was getting dominated by arsenal. I can't say if crystal's midfielder and defender were not good enough caused by the players in arsenal and crystal ahs different capacity. Arsenal was also still on its best performance when entering the season. If arsenal was getting easy win for that match and i would not be surprised to see that happened with such team.
Crystal must learn how to build its team become even better and better. Its team needs more time to compete with a club like arsenal.