Do AL and NL MLB umpires wear a patch on their hats for their league? - Quora

What do MLB umpires do in the off-season? - Quora

Umpire (baseball) - Wikipedia

Do AL and NL MLB umpires wear a patch on their hats for their league? - Quora

Do AL and NL MLB umpires wear a patch on their hats for their league? - Quora

Do MLB players get new hats every game? - Quora

Can an MLB umpire really tell where the ball crosses the plate without taking into account where the catcher's glove is when he catches it? - Quora

What is the strike zone in MLB? Why does it change from umpire to umpire? - Quora

How Much Are MLB Umpires Paid?, News, Scores, Highlights, Stats, and Rumors

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

Can an MLB umpire really tell where the ball crosses the plate without taking into account where the catcher's glove is when he catches it? - Quora

Are there different umpires for the American and National League? - Quora

Do AL and NL MLB umpires wear a patch on their hats for their league? - Quora