Cade Horton knew pretty quickly something was up. Triple-A Iowa pitching coach Tony Cougoule summoned Horton from his Toledo, Ohio, hotel room to head up to manager Marty Pevey’s room because he had been named the league’s pitcher of the month.

Cade Horton joins the Cubs' rotation with a high-octane fastball and dominant minor league numbers, but questions about his durability and pitch depth loom large ahead of his MLB debut.

Horton reached the majors thanks to a collaborative process that began during spring training in Arizona: "He's going to impact this team."