sports pros: you could earn more money and do what you like to do if you like sports.
sports cons: if you were injured seriously, that'd be the end of your career. If you became famous, those gosh darn paparazzi would try to dig up a lot of mess about you to ruin your reputation.
academic pros: you could go to college, get a well paying job. Academics gets you everywhere. it's something to fall back on if the sports thing doesn't work out.
academic cons: can't think of any.