Southampton manager Claude Puel believes his side deserved a draw at the Emirates Stadium after Arsenal only secured the three points, thanks to a stoppage time penalty from Santi Cazorla.
The French boss was happy with his side's performance but left North London disappointed, as the Saints are yet to win a game since he replaced Ronald Koeman in the summer.
Dušan Tadić put the visitors ahead earlier in the first half after a strong start to the game. However, Laurent Koscielny equalised the match minutes later before Cazorla took advantage of a penalty in the injury time to give Arsenal a dramatic win.
"It's a pity to lose the game in these conditions," Puel said after the game. "It was a very good performance from us, but it's a shame and it's very hard to lose this game. A draw would have been the right result here, not a loss."
Southampton are in the bottom three after having secure only two points from the first four games of the Premier League. Yet, Puel said that there are reasons to believe in his side as they were really unfortunate not to pick at least a point at the Emirates Stadium.
"We can say it's a disappointment because it's the fourth game that we are feeling this way at the end of the game, with frustration," Puel admitted. "All the time you have the feeling you can win the game and it's the same this afternoon at the Emirates.
"I think we played the first 30 minutes very well and Arsenal had difficulties. After we moved back a little more for the next 15 minutes. But in the second half Arsenal pushed a lot and my players stayed very brave. We also had the situation to score with Shane [Long] two or three times."