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You're listening to 20,000 Hertz.

Whether it's a roaring crowd,

a referee's whistle, a referee's whistle, a shouting coach, or a blaring goalhorn.

Sound is a crucial part of basically every major sport out there. But there are some sports where sound does more than just call out a foul or ring in a goal.

In these games, players are totally reliant on sound to know where they are in relation to the ball, to the field, and to each other.

These sports are built around the experience of hearing,

and during a game, players have to be hyper aware of every sound around them.

Set, ready, pitch.

My name is Subalo, Ethan Johnston, and I am a blind athlete.

Ethan was born in Ethiopia, but grew up in Missouri.

As a kid, he loved sports, but his partial blindness made playing them really difficult.

I played soccer and, you know, just typical club soccer back from like fourth grade

all the way to eighth grade.

But obviously that was an adaptive, so it's hard.

The best part about it, I have a lot of brothers and sisters, so we're always on the same

team so they'll say, Ethan ball on the right.

...