Does a good fastball run in Pettitte blood? Derek Jeter is certainly hoping so ... 'cause the Marlins exec said he signed Andy Pettitte's son this week because he's banking on the kid's DNA!!
Jeets spoke about the Marlins' deal with Jared Pettitte out in NYC to Adam Glyn ... explaining, with a little bit of his tongue in his cheek, that he inked Andy's boy 'cause of his legendary pops' skillset.
"He's got good genes," Jeter said wryly when asked why he thought his longtime Yankees teammate's son deserved a chance in the Miami org.