When we lost to Swansea ten days ago I detected a whiff of endofseasonitis. We’d already qualified for the Champions League and the title was long gone – dusted, boxed up and packed away. We lost and we weren’t great.

All it takes is for a few percent of the usual performance to evaporate for what we’ve seen over the last three games to occur. Not horrendous, but not very good either. Too predictable and a bit slow of body and mind.

I know that the difference between third and fourth is not to be dismissed, nor is the notion of finishing one place higher than last season something to look down at, but once that Champions League qualification had been reached, maybe a little bit switched off.

Feels that way. I suppose it’s a bit like being a marathon runner. Those last few miles are the hardest. (I don’t know this of course, as I’ve never run one. I have eaten one, but that’s as near as I’ve got).

It explains why teams that are imperious until the point of winning something often end up losing straight afterwards (and it makes Arsenal’s 2004 achievement – to not lose having won the title with four games to spare – all the more admirable).

So all of this, despite my frustration last night, I understand. I just hope that this dip in form – goals are suddenly nightmarishly hard to come by – can be shaken off for the cup final.

I’d like to think our recent appearances there have inured us to such whimsical Wembley form. But ‘Wigan’, ‘Hull’ and ‘Reading’ are three words that will point to another truth: that playing a cup semi-final and final is not remotely predictable. Arsenal don’t do it that way.

All fingers point to it being anyone’s game. But at the very least, we need to find a way of rediscovering some mojo and some of the technical silk that we have seen since the New Year. We look leggy and a bit dulled.

Wenger’s worried we could be fatigued for the final. It’s easy to see why. I get why he’s played the same players, but there’s little to gain from doing that on Sunday. Giroud is dead beat. Alexis is running on empty. Ozil is making weary errors and even the metronomic Cazorla is misplacing passes.

Big changes on Sunday – I’d be amazed if there was anything else. It’s not like the preferred eleven is currently nailing it.