Replying to Getting out of sports i dont want to be in- need help

yo i really dont wanna be doing a spring sport this year but i just had my first day of practice. my mom is making me do this, its not really my choice. what are good ways to get out of doing the sport? not going is not an option, i need to have a legit excuse to not do it.

if you wanna know why, i am a second semester senior, into college (i got in a little bit for this sport, but dont plan on doing it in college), and i just wanna relax this spring.

any help?