Embattled umpire Ángel Hernández alleges MLB altered
John McSherry - Wikipedia
AA Pride Sports Magazine
Major League Baseball Appoints First Black Umpire Crew Chief
MLB appoints 1st black umpire crew chief – Sun Sentinel
Beyond the grunt: Umpires mic up, and baseball changes a bit
AP: MLB appoints 1st black umpire crew chief
MLB appoints 1st black umpire crew chief – Sun Sentinel
MLB appoints 1st black umpire crew chief – Sun Sentinel
MLB makes history by naming its first black and Latino-born umpire