By Rob Kelly
The England international has been under scrutiny of late, but responded with two superb finishes in the North London derby.
And Szczesny believes that performance could spark an upturn in form in front of goal for Walcott.
"Theo scored two goals, which is all you can ask for,” Sczcesny said. “They were both very good. He has come under a little bit of stick for his finishing but he took those two very well and we are very pleased for him.
“He's a very good lad and he is probably one of the best trainers in the dressing room.
“He works very hard every day, scores a lot of goals in training and just needs to get the goals in games. But we are very pleased for him and we hope he can do it all over again in the games from now.”Copyright 2017 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source