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Story summary
- The New York Mets transition Jorge Polanco to first base after Pete Alonso's departure.
- Polanco signed a two-year, $40 million contract and has limited first-base experience.
- Manager Carlos Mendoza says first base is complex and Polanco needs more game action to adapt.
- Polanco will seek guidance from Mets legend Keith Hernandez.
- Mark Vientos is being considered for first base, having played there in the minors.
