Mets prospect Mark Vientos has crushed the ball and become versatile, putting himself on doorstep of majorsVientos could make his major league debut during the 2022 season9/18/2021, 2:30 PMJoe DeMayoMLB Prospects Freelance WriterMets prospect Mark Vientos fielding at 2021 spring training in Port St. Lucie, Fla. / Rob Carbuccia/SNY