Cron is out of the lineup Tuesday against the A's.
Jefry Marte will take over at first base and bat fifth against lefty Sean Manaea. Cron hit just .237/.287/.387 against lefties last year while Marte hit .244/.322/.462 against southpaws in 2016. The two players may be deployed in a strict platoon at first base until Luis Valbuena (hamstring) is cleared to return to action.