For all the newbies here, ignore the horrible advice in re: to playing russian roulette with your job while you're on probation. Do people game the system and get away with it? Yes, but, don't be that guy.

It was your call to pick this career and being on reserve and adhering to the rules is just what you do. Otherwise, pick a different career. You'll be at the majors soon enough. Just pay your dues, it's worth it.