Sorry for you to go through this. I also had parents that always put me down and never encouraged me any way, but at least they didn't do the comparing thing, that must have hurt.

Just do your own thing and i would recommend trying to set boundaries with your parents - at least your dad seems to try to respect them (asking you if he might tell the high school coach), and i think his comment about you coming a long way was him acknowledging the hard work and motivation you put in, at least i read it that way - expressing stuff like that might not be his strong suit. Your mom might be a different beast tho.

If your mom's involvement in your activities is detrimental to your mental wellbeing, you might wanna tell her to stop talking like that about you, or you keep her out of the loop if you can. I don't know if you are still living with them, and your options depend a lot on how dependent you are from them.