The Pittsburgh Pirates are promoting 2019 first round draft pick Quinn Priester to make his Major League debut on Monday, according to Jason Mackey, who later confirmed the date from the Tweet below.
Sources: Quinn Priester expected to make his MLB debut next week against the Guardians. Monday or Tuesday. The 2019 first-round pick considered the Pirates' fourth-best prospect by MLB Pipeline. Worked just one inning last night. Story to come.
— Jason Mackey (@JMackeyPG) July 15, 2023
Priester pitched a single inning last night for Indianapolis, which now seems like it replaced his typical work day leading into a start.