Arsenal manager Arsene Wenger says it's too early to understand if rotation can be an important weapon for the Gunners this season.
Key players like Petr Cech, Theo Walcott and Nacho Monreal were all on the bench during Wednesday's Champions League game against Dinamo Zagreb.
The Englishman came on in the second half and scored the only goal for Arsenal but it was not enough as the hosts kept their cool to take all three points.
"You know that when you don't win the game you have to look at yourself and think, 'I didn't get it right'," Wenger told reporters when asked about the changed he made for the game.
"I personally don't believe that the players who came in had a bad game. It just didn't work.
"We know we have to do that again. We were maybe a bit unlucky and maybe lacked cohesion or some competition in some situations. I have to analyse that. It's very difficult to give you a definite answer straight after the game.
"[But] let's see where we stand after six games. It's too early to get any conclusion. Tonight was a special circumstance.
"We had a lot of the ball, Zagreb gave absolutely everything and once we went 2-0 down it was a very difficult game with 10 against 11. Let's see where we stand after six games. Then we can draw conclusions."