How to get my parents to let me quit baseball?

My parents forced me to play the torturous sport of baseball. I had repeatedly let them know that I did not want to but for some reason they forced me to play. Then my dad payed for most of a new skateboard because I had good grades but part of to get me to quit complaining about baseball. Now almost everyday of my time is invested in baseball because my parents invested in private coaching. There is not one thing I like about this sport and my parents are aware of that but they still force me to play. I offered to play lacrosse before sign ups but they still said no. I am playing 2 sports a year (not counting baseball) and they still want me to play. The two sports are football and basketball. Please give some advice?