Arsenal manager, Unai Emery, is hopeful that Arsenal will qualify for Champions League even after their shocking home defeat to Crystal Palace.
The Londoners failed to capitalize on Manchester United and Tottenham's slip up in the race for a Champions League spot for next season.
And that fumble could see them drop out to fifth position if Chelsea get at least a point from their game against Burnley at Stamford Bridge on Monday.
But the Gunners manager pointed out that Arsenal can still decide their own fate despite passing up a huge chance to boost their qualification hopes.
"A big frustration, it was a big opportunity," Emery said.
"But we can say we had a big opportunity in the matches before and we took a lot of points in a lot of key moments that give us the opportunity to be now, in our way, with the possibility to achieve our targets.
"Our first target is to get to the Champions League through the Premier League or Europa League. We lost a big opportunity but it doesn't change our idea.
"It's in our hands, we can continue winning and being in the top four."
Arsenal conceded twice from set plays as Christian Benteke and James MacArthur both scored from a free-kick and corner while Wilfried Zaha capitalized on a Shkodran Mustafi error.
Emery acknowledges that defending set-pieces is one of the things his team have to improve on.
"If we were better in the set-pieces maybe we could win this match," the 46-year-old said.
"In all the season I think that has been a problem. They have good players and in the set-pieces, we weren't strong like all season. We struggled more than we wanted in these situations.
"A day can happen like today. They have very good players and an experienced coach. They won at Manchester City, Newcastle, and Leicester."