Might be 20?

via Metsblog

MILB page

Weird.  Might just be a typo, but if you go to his MiLB page, it says he was born in 1986, but if you search Martinez, when they all come up, it says 1988.  

If he really is 20, how much of a hit does his prospect status take?  This could put a damper on prospect smackdown on Wednesday.