Marlins' Eury Pérez breaks franchise record in MLB debut.
Eury Pérez will become the youngest pitcher to debut with the Miami Marlins, breaking a record set by the late José Fernández. Pérez, armed with four above-average pitches and excellent command, has big expectations as a pitching prospect. The Marlins hope Pérez can help keep the team afloat and delay regression, potentially giving them three quality arms at the top of the rotation.