Consequences of Changing Sports?

yo

So I’m a sophomore right now and have run XC the past two HS fall seasons. However, I really want to play tennis, and it occurs during the same fall season as XC. Would it show lack of committment if I changed (and most likely stayed JV for both – I would be V. XC if i stayed for junior year)? I was kinda forced into XC by my family because all my other siblings did it and I have some friends on it, but I really want to do tennis.

No. Unless you are a recruited athlete, the mere act of changing a sport will not matter. Now if there are mentoring/leadership opportunities, including a captaincy, in XC that you would be unable to replicate in tennis or another EC, then there might be a very very small reason not to change. But it will not be a make-or-break.