Passan: How Wander Franco became MLB's next can't-miss kid

BOWLING GREEN, Ky. -- Wander Franco, who at 18 years old is already the best prospect in baseball, strode into a suite at Bowling Green Ballpark. Franco smiled, which he does often, and the sunlight beaming into the room reflected off his braces. He sat on a stool in the back-left corner. Following him were his friends and roommates, Tony Pena, Osmy Gregorio and Joel Peguero. Even though Franco is at least three years younger than them, they all call him "El Patrón," the Boss.

It was Tuesday, which meant mandatory English class for Latin American players at the Tampa Bay Rays' Class A affiliate. In front of the group stood David Kerr, who works down the street in marketing at Western…