Why Simone Biles writes what looks like a dollar sign in chalk before every balance beam routine

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3 Quick Facts About Simone Biles

Before hopping on the balance beam for a typically dominant routine, Simone Biles does a subtle move.

Like many gymnasts, Biles chalks a mark on the beam, but hers appears different than the standard line on the four-inch wide beam.

Instead, Biles draws what appears to be a dollar sign on the beam.

Here was Biles writing it before winning gold in the all-around final on Thursday.

simone biles $Elsa/Getty

In 2014, Biles explained to the Pittsburgh Post-Gazette that she actually writes a line, like other gymnasts, but puts an "S" over it to show it's hers. Thus forming a dollar sign.

"You see, everybody puts their line on the beam, so I can never tell which one is mine. So, I put an 'S' on it, and it happens to turn into a dollar sign. People think I do it on purpose, but I don't."

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Simone Biles at the 2016 Olympics
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Simone Biles at the 2016 Olympics
2016 Rio Olympics - Artistic Gymnastics - Victory Ceremony - Women's Individual All-Around Victory Ceremony - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of USA bites her gold medal on the podium after winning the women's individual all-around final. REUTERS/Dylan Martinez FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
2016 Rio Olympics - Artistic Gymnastics - Victory Ceremony - Women's Individual All-Around Victory Ceremony - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of USA, wearing her gold medal, reacts at a camera after winning the women's individual all-around final. REUTERS/Mike Blake TPX IMAGES OF THE DAY. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
2016 Rio Olympics - Artistic Gymnastics - Final - Women's Individual All-Around Final - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of USA competes on the vault during the women's individual all-around final. REUTERS/Dylan Martinez FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
2016 Rio Olympics - Artistic Gymnastics - Final - Women's Individual All-Around Final - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of the U.S. competes on the balance beam. REUTERS/Dylan Martinez FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
2016 Rio Olympics - Artistic Gymnastics - Final - Women's Individual All-Around Final - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of the U.S. celebrates winning the gold. REUTERS/Damir Sagolj FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
2016 Rio Olympics - Artistic Gymnastics - Final - Women's Individual All-Around Final - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of USA competes on the beam during the women's individual all-around final. REUTERS/Kai Pfaffenbach FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
2016 Rio Olympics - Artistic Gymnastics - Final - Women's Individual All-Around Final - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of USA competes on the beam during the women's individual all-around final. REUTERS/Damir Sagolj FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS
2016 Rio Olympics - Artistic Gymnastics - Final - Women's Individual All-Around Final - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of USA celebrates winning gold in the women's individual all-around final. REUTERS/Dylan Martinez TPX IMAGES OF THE DAY. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
2016 Rio Olympics - Artistic Gymnastics - Final - Women's Individual All-Around Final - Rio Olympic Arena - Rio de Janeiro, Brazil - 11/08/2016. Simone Biles (USA) of the United States competes on the uneven bars. REUTERS/Athit Perawongmetha FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
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All gymnasts make the mark as a point of reference in their routine, whether it's to start a trick or start a dismount. Biles' just happens to look more flashy.

However, there are other theories. Will Graves of the Associated Press says it dates back to the 2013 World Championships when the PA announcer mispronounced her name.

As Mashable's Marcus Gilmer pointed out, the sign can be seen on the beam below:

simone_biles_beamElsa/Getty

It's unclear if Biles is down-playing a bit of showmanship, or if her sign is really coincidental, but it only adds to the lure of "the greatest ever."

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