The match has been going on for 20 minutes, but the score is still 0-0. Arsenal appeared more dominant and they also had more chances, but Brighton could defend quite well so far. Actually, there was a good chance that Odengard had in the box but unfortunately, he couldn't shoot well enough. This is really not an easy match, but I think Arsenal will still come out as winners.
Brighton must have come to the Emirates stadium knowing that the will be dominated most of the time by Arsenal, they just need an opportunity to punish Arsenal. Brighton's coach still playing same tactics as he did against Manchester United with the high defensive line and compressed space between defenders and midfielders so Arsenal does have the space to find a creative pass through. Arteta starting Trossard may not have been the best, he always looks better to me coming in as a substitute after studying the game. Lucky for Arsenal they have scored a goal, very important going into halftime.
Unfortunately Declan Rice got a red card and Arsenal had to play with 10 players and Arteta had to be careful.

It was really worrying after Arsenal were favored as winners and continued to put pressure on Brighton's defense, in the end Declan Rice had problems and had to leave the field.
Actually this was in accordance with my prediction that Brighton could at least score 1 goal but the problem was Arteta had to really provide a defensive strategy that strengthened Arsenal so as not to lose points or 1 point better with a draw.
The temporary score was 1-1 in the 70th minute and if Arsenal failed to maintain that score, this defeat would slightly decrease the players' confidence.