Ran across some interesting reading regarding signing bonuses. I don't know anything about the authors or their company.
What’s your signing bonus number?
http://athletewealth.com/whats-signing-bonus-number/
How your mlb signing bonus is taxed
http://athletewealth.com/howmlbsigningbonusistaxed/
Will your signing bonus be enough?
http://athletewealth.com/will-...ing-bonus-be-enough/
Understanding your mlb signing bonus paystub
http://athletewealth.com/under...gning-bonus-paystub/