I've always tried to start a match with my players having at least 90% condition, but does it matter that much? Some people say it doesn't. I've just a had an association match against an equal team, and I've won 4-0 despite my players having 50% starting condition (I didn't notice that I have another match in 20 min.). My opponent had a normal formation and a good form.
So my question is: What condition is good enough for a good performance?
Is there anyone that could tell me his opinion on this from a long term view?