Arsene Wenger sounded like he may be regretting his decision making after a potentially costly win over Leicester City.
Arsenal beat bottom of the table Leicester City 2-1 to climb back above Tottenham Hotspur, but the victory came at a price.
On a night Spurs lost 3-2 to Liverpool, the Gunners won their match but suffered injuries to two key players.
Aaron Ramsey was withdrawn after playing only nine minutes against the Foxes, coming on as a substitute and then having to be replaced himself.
Arsene Wenger admits with hindsight, it was an errant decision to bring the Welshman on, and told how he nearly didn't at all.
He told Arsenal.com, when asked if it as a hamstring injury: "It looks like it. I don’t know how bad it is yet. Just visually, it didn’t look good. When a guy stops straight away and sits down, that’s not good news.
"There’s a recurrence now of a few muscular injuries and it’s difficult - we haven’t found out why. I basically left him out today because I wanted to be cautious with him. I had to bring him on - I had a hesitation between Flamini and him - because we lacked a a bit of offensive power. It was not the best of decisions."
Ramsey's injury was just one of two sour notes which marred the Gunners' win, with star summer signing Alexis Sanchez picking up a fresh knock.
The Chilean had returned from a hamstring strain which kept him out of the North London derby, only to suffer a knee injury in the first half. He played on, but was withdrawn in the 67th minute, and Arsene Wenger admitted he wished he had just taken him off at the interval, admitting the player talked him out of doing so.
"Sanchez got a knock on his knee. I don’t think he was himself. From the moment he got this knock, he was never really comfortable. I don’t know for how long he will be out and whether he will be out or not. I haven’t seen the doctor.
"Yes I was ready to take him off at half-time but he said, ‘no it’s okay, I can go on’. When I watched him play I thought, ‘No, that hasn’t [got better]’. Sometimes when you run it off it’s just a kick but he became worse and I didn’t see him in the second half."
With Arsenal 2-0 up at the break, Wenger should have risked upsetting the forward, and taken the decision out of his hands. The attacker is too important to lose in a month where the club resume their Champions League campaign, and will have to hope there is no damage done which will cause him to miss any substantial playing time.