The problem is that in the history of my team does not apear that I changed the team name. So if somebody enters to the history he will think that im a new user.
I will discuss this with the other BBs too. There would be some technical difficulties changing team names everywhere that they appear (team names are also part of the data used by the match viewer , and of the data recorded for box score pages, for example). Historical changes might also confuse other users. It's also true that in real life, at least from what I know, that when a sports team changes names, the old name stays in the record books.
What we probably should do is simply to insert line into the team history table noting when a team has changed names. Perhaps this was all that you were suggesting.