Regarding college sports...

[timbuck2]

Let's say I enter my first year of college with all my legal documentation changed, post top surgery, and on Testosterone. If I'm no longer legally female will I be able to play on a the mens teams or will I only be regulated to competing with females only because of my birth sex? I'm not sure if this is something I would have to bring up to a coach or an advisor and talk abut with the specific school or if I could just leave it alone and hope I don't get caught by some errant piece of paperwork. In the state of New York for reference.

[skin]

It depends whether you are talking club sports, NAIA, or NCAA.  I would imagine the NCAA rules are the most strict, and their requirements for FTM athletes are very friendly.

A trans male (FTM) student-athlete who has received a medical exception for treatment with testosterone
for diagnosed Gender Identity Disorder or gender dysphoria and/or Transsexualism, for purposes
of NCAA competition may compete on a men's team, but is no longer eligible to compete on a women's
team without changing that team status to a mixed team.

A trans male (FTM) student-athlete who is not taking testosterone related to gender transition may
participate on a men's or women's team.

The student's responsibilities
1. In order to avoid challenges to a transgender student's participation during a sport season, a studentathlete
who has completed, plans to initiate, or is in the process of taking hormones as part of a
gender transition should submit the request to participate on a sports team in writing to the director of
athletics upon matriculation or when the decision to undergo hormonal treatment is made.
2. The request should include a letter from the student's physician documenting the student-athlete's
intention to transition or the student's transition status if the process has already been initiated. This
letter should identify the prescribed hormonal treatment for the student's gender transition and documentation
of the student's testosterone levels, if relevant.

I would imagine a school's club team would not have an established policy.  If that is what you are going for, I would start by giving them a copy of the NCAA's policy since if it is good enough for NCAA sponsored intercollegiate teams, it should be good enough for club teams.

[timbuck2]

Thank you so much Skin! Exactly the information I needed and such very good news that the NCAA is so trans friendly