Read the thread from its start.
The answer to your question was given (at least from me).
You are entering BreakPoint theritory with that example, as it is both impossible and barely touches on anything we said.
The only thing it does is to confront one of the main arguments about having an era and it does it without context, so it is basically useless.
Well, if I have written it directly (not implying it) and you still don't see it .....
The bolded part only exacerbates the problem with your thinking.
So, because anyone can think of his own definition of what an "era" means, we will have to forever remain in the dark, who had an era and who didn't and just like that draw arbitrary lines?
You did that to show me it is possible and I just show you how wrong that approach is by just dismantling your point about 2003 being part of the Hewitt era.
After the bolded part: I don't care for someone telling me that it is Roddick's era.
He is free to think whatever he likes, but that is not something a knowledgeable person will agree with.
Same with Nadal.
There is a reason why a number of successive years are required for an era as one of the prerequisites of the era is to have sustained dominance. That way we don't have to look for arbitrary starts and ends of periods as our fancy strikes us. If one does his opponents will have (and rightly so) the opportunity to broaden those arbitrary borders to their advantage.
For example, I can broaden the period 2008-2013 to 2008-2015, because Djokovic and Nadal are of the same generation and Djokovic won his first Major in 2008 and see till the last year where both are competing and guess what ...... Djokovic is miles ahead as he has the numbers and the consistency.
In fact, this is a much more balanced POW when talking about the era after Federer.