Speaking to reporters Saturday at the Mets' Amazin’ Day at Citi Field, Mark Vientos confirmed that he's been "taking reps" at first base and is preparing for a potential position change.

Mets president of baseball operations David Stearns said, "We also feel really good about the young players that are coming through our system that have the ability to play."

Mendoza cited Jared Young and non-roster invitee Joey Meneses as additional options at first base while the third base mix (if Vientos were to take over first base) could include Baty, Luisangel Acuña (whom the Mets have told to get reps at the position) and Ronny Mauricio.