|Rosicky was Arsenal's stand out performer but he couldn't prevent them from losing to Blackburn|
Arsenal's first chance also came from a free-kick as Diaby got his head to the ball but once more it went wide.
Diaby then got another chance as he got on the end of Rosicky's corner but Kean was there to make a great save to deny the Frenchman.
The resulting corner almost ended up in a goal as Rosicky's delivery was met by Vermaelen but Kean scrambled across his goal to keep it out.
Minutes before the break Gervinho had a fantastic chance to give the Gunners the lead. Rosicky managed to slip the ball through the defence and into the Ivorian but he somehow slid the ball wide.
The score at half time was 0-0.
Arsenal's first proper attempt on goal came from Diaby as he got space to work off a shot from outside the area but it flew harmlessly wide.
The Gunners were having plenty of attempts on goal and their next two both cleared the bar once more as first Diaby headed over and then Oxlade-Chamberlain rather spectacularly failed to find the net.
Rosicky who was Arsenal's brightest player on the day then went close as he drove a shot from range which flashed wide of the goal.
Shortly after, Rosicky had another chance and it was even closer this time as the Czech was allowed time to smash a shot which crashed back off the cross bar.
However, out of nowhere, Blackburn took the lead. Walcott didn't track his runner and Olsson was allowed to get on the end of a flick on. The Swede then struck a shot which Szczesny parmed out into the path of Kazim-Richards. He hit a shot into the ground which then found the post, and then the back of the net.
Into the last 10 minutes and Nacho Monreal had a chance to score his first goal for the club. The ball fell to him just inside the area but he drove the ball wide.
Theo Walcott had looked pretty lively since coming on and he almost found the equaliser but his header from close range was saved by Kean.
There was two final chances though as in the dying moments of injury time Giroud saw a shot blocked and then Arteta drilled into the side netting.
The final score finished Arsenal 0-1 Blackburn.
The teams lineups:
Arsenal: Szczesny, Coquelin, Koscielny, Vermaelen, Monreal, Arteta, Diaby, Rosicky(71), Oxlade-Chamberlain(71), Gervinho(71), Giroud.
Subs: Mannone, Sagna, Wilshere(71), Cazorla(71), Ramsey, Walcott(71), Podolski.
Blackburn: Kean, Orr, Hanley, Dann, Olsson, Williamson, Lowe, Pedersen, Olsson(64), Kazim-Richards, Rhodes(82).
Subs: Usai, Givet, Rekik, Bentley(64), Nunes, Nuno Gomes, Goodwillie(82).
My man of the match: Tomas Rosicky
Referee: Mike Dean