Tired Players ?

It’s early in the season the players fitness in improves the season wears on. It’s the same with England games we are always poor for the September international games

We're poor all year round not just september

Yeah, not the best example to use, was it. In fact, almost any other example could have been better. ;)
 
It has to do with do you understand what it is like to be exhausted after a day of physically and mentally demanding work.

Not sitting in an office/clasroom/library/lecture hall but actually doing a days work.

Yes, I'm extremely aware of what it is like to be exhausted after a day of physically and mentally demanding work. And I'm 38 years old. I still can't see the relevance of aggressively attacking an opinion regarding the stamina of professional sportsmen !?
 
The result of a lot of games at the start of the season along with it being a very hot day. A little tiredness was inevitable. Despite that we won the game and kept a clean sheet. Fantastic result.