Considered one of the top rookies available during the 2017-2018 international signing period, Dominican shortstop Ronny Mauricio agreed to a $2.1 million signing bonus with the Mets, breaking the club record previously held by fellow Dominican shortstop Amed Rosario. The talented youngster made his professional debut in 2018, forgoing the Dominican Summer League completely and suiting up for the GCL Mets instead when their season began in late June. The 17-year-old hit .279/.307/.421 in the 49 games he played in Florida and was promoted to the Kingsport Mets to end the season, getting into 8 games with them and hitting .