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Racine cup stacking tournament, sport stackers race against clock
The "Wisconsin Winter Stack Up" hosted some of the country's fastest cup stackers. Sport stacking is a competition in which competitors stack specially designed cups up and down in set patterns.
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Kids show off insane cup-stacking skills
An curved arrow pointing right. Taiwan took home 11 gold medals from the World Sport Stacking Championships in Germany. Most team members started before age 10. Story and editing by Alana Yzola ...