Umpire (baseball) - Wikipedia

Ángel Hernández (umpire) - Wikipedia

Toby Basner - Wikipedia

Eric Chavez - Wikiwand

A New Study Shows Umpire Discrimination Against Non-White Players - Baseball ProspectusBaseball Prospectus

MLB's Joe West to set umpiring games record - The Iola Register

C. B. Bucknor - Wikipedia

Randy Marsh - Wikipedia

Mike DiMuro - Wikipedia

Adam Hamari - Wikipedia

Tim McClelland - Wikipedia

Major League Umpire Hurt Three Years Ago Wants Wilson Sporting Goods To Pay Up

Wally Bell - Wikipedia

Umpire (baseball) - Wikipedia

MORE