He began the 2018 season in Binghamton , and received a midseason promotion to the Las Vegas 51s of the Class AAA Pacific Coast League .
MLB.com ranked Alonso as New York 's fourth best prospect going into the 2018 season .
Alonso began the 2018 season in Binghamton , and received a midseason promotion to the Las Vegas 51s of the Class AAA Pacific Coast League .
MLB.com ranked Alonso as New York 's fourth best prospect going into the 2018 season .