That was my first thought until I realized BJ changed his name to his given name Melvin instead of being known as Bossman Junior.
Here are nine other major league players who changed their name:
Nine to Know: Melvin joins these guys
Mike Stanton who became Giancarlo Stanton
Joey Belle who became Albert Belle
Richie Allen who became Dick Allen
Edison Volquez who became Edinson Volquez
Kendry Morales who became Kendrys Morales
Jose Gonzalez who became Jose Uribe
Willie Hernandez who became Guillermo Hernandez
Fausto Carmona who became Roberto Hernandez
David Arias who became David Ortiz
Here are nine other major league players who changed their name:
Nine to Know: Melvin joins these guys
Mike Stanton who became Giancarlo Stanton
Joey Belle who became Albert Belle
Richie Allen who became Dick Allen
Edison Volquez who became Edinson Volquez
Kendry Morales who became Kendrys Morales
Jose Gonzalez who became Jose Uribe
Willie Hernandez who became Guillermo Hernandez
Fausto Carmona who became Roberto Hernandez
David Arias who became David Ortiz