Dodgers news: MLB's first umpire announcement for replay reviews - True Blue LA
What does an MLB home plate umpire wear for protection? - Quora
Do AL and NL MLB umpires wear a patch on their hats for their league? - Quora
Why are MLB umpires so bad at umpiring? - Quora
Do MLB players get new hats every game? - Quora
I'm a new umpire. What do I need to know about umpire equipment/uniform? - Quora
Rookie MLB ump from hard times: Yankee Stadium, full count, Aaron Judge, 9th inning 'piece of cake'
Do AL and NL MLB umpires wear a patch on their hats for their league? - Quora
Umpire (baseball) - Wikiwand
What model of caps do MLB players actually wear? Is it 59fifty? - Quora