Vientos is likely to have a diminished role to begin the season after the Mets agreed to a contract with J.D. Martinez on Thursday, which was reported by Jon Heyman of the New York Post.
The 24-year-old appeared poised to open the season as a lineup regular between designated hitter and third base, but Martinez's signing a week before Opening Day significantly alters that outlook. Vientos has clubbed four homers during spring training but hit just .217 and struck out 17 times in 54 plate appearances. The right-handed bat of Vientos may now begin the campaign in the short side of a platoon at the hot corner with the lefty-hitting Brett Baty, but starting the season in the minors is also possible.