By Chris Harris
The senior Pole lost his No 1 status to his younger compatriot when he suffered a shoulder injury before the Manchester City game in January and is now working his way back to top form.
Szczesny has seized his own chance to establish himself as Arsène Wenger's first-choice goalkeeper but Fabianski does not feel any resentment towards the 21-year-old.
"I have known Wojciech since he was 15," explained Fabianski. "We were together at Legia Warsaw, my former club.
"We have known each other for so long and we are good mates. I don’t know if that makes it more difficult, but we are pushing each other and that can only help us.
"He got his chance [when I was injured] but with me it was exactly the same if you remember. Manuel [Almunia] got injured and I had my chance.
"In football it is like that someone gets injured and the other guy is having a chance because of that. That is the rule of football."
Fabianski has played in both Carling Cup ties this season and made some important saves during Tuesday night's Fourth-Round victory over Bolton. He believes he is getting back to his best.
"With the fitness level, of course I feel 100 per cent," he said.
"When you play regularly, your confidence and especially your feeling of the game on the pitch is better, but I feel there is a little improvement from the first game I played against Shrewsbury.
"I think it looked much better from my point of view against Bolton."Copyright 2014 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 26 Oct 2011