A PIECE OF HISTORY TMZSports.com
MLB fans looking to own Shohei Ohtani's historic 50/50 home run ball might need to break a few more piggy banks for it than they initially expected ... 'cause Ken Goldin just revealed to TMZ Sports it wouldn't surprise him if the baseball sold for over $10 MILLION later this week.
Currently, the memento -- which Ohtani smacked over a left field wall during a never-before-seen performance against the Marlins back on Sept. 19 -- is a few mil away from getting to eight figures .