Eastern League's Matsuda working to become first major league
MLB makes history with umpire crew chief appointments - Los
How Much Does An MLB Umpire Make?
Gibson makes final call: MLB umpire retires after 24-year career
MLB umpire job responsibilities
MLB umpire job responsibilities
Deadspin's deep dive into umpire stats: accuracy and consistency
MLB notes: Umpires wear white wristbands to protest 'abusive
MLB: Umpire Hernández blew calls, losing World Series job - The
Umpire, Clearly Going for a Record, Ejects Three Rangers in About