MLB umpire job responsibilities
MLB umpire Malachi Moore a trailblazer from Compton Youth Academy
MLB And Umpires: Inside the MLBUA - Dodger Yard
Major League Baseball umpires: Danger zone ahead?
What does an MLB home plate umpire wear for protection? - Quora
Gibson makes final call: MLB umpire retires after 24-year career, Sports
Earning Their Stripes as Umpires and Referees - The New York Times
MLB umpire Cuzzi still loyal to local roots - The Observer Online
Five Minutes with Gerry Davis - Little League