Arsenal came from a goal behind to beat stubborn Crystal Palace 2-1 in their opening Barclays Premier League match on Saturday.
A late Aaron Ramsey goal in the dying minutes to break the hearts of every Crystal Palace player and fan inside the Emirates Stadium.
The Welsh midfieder found the back of the net after a good play from his teammates, including substitute Chamberlain, to help Arsenal start the campaign on a high note.
The Gunners started the better of the two teams bossing possession as usual, especially in the opening 20 minutes, but could not break the Palace defence that stood firm to prevent the home side from getting an early goal.
Jack Wilshere and Aaron Ramsey had a few chances to break the deadlock, while Palace were also able to avoid a penalty scare after the Welsh midfielder was brought down inside the box by Dann.
Palace found it hard to get out of their half and tried to break Arsenal through counter attacks down the flanks.
Completely against the run of play, stubborn Palace managed to break the deadlock, with debutant Hangeland, rising high to head in the opener from a corner kick after poor marking by Arsenal defender Laurent Koscielny.
Arsenal managed to up their tempo after conceding with Mikel Arteta getting a shot away from the edge of the penalty box, but not troubling the Palace goalkeeper.
However, after some frustrating moments with Palace remaining solid, Arsenal defender, Koscielny, managed to make up for his error earlier in the match by getting the equalizing goal for Arsenal.
The French defender headed the equaliser from a well taken free kick by Alexis Sanchez, with just a few seconds to the half-time break.
With Arsenal struggling to find the winning goal in the second half, Manager, Arsene Wenger introduced Olivier Giroud and Alex Oxlade-Chamberlain, who played a vital role leading to the winning goal.