Arsenal goalkeeper Wojciech Szczesny isn't resting on his laurels after his cleansheet at Sunderland.
Szczesny admits he is still struggling to find top form following his dip for Arsenal this season.
After victory on Wearside, he said: "I made a couple of saves that helped the team win the game and I'm happy for that but there is a lot of work still to be done.
"I still struggled a little bit on crosses so I would have been happier with a faultless performance."