In the early 2000s, thousands of U.S. schools had their students race the clock to stack cups in gym class. The man responsible for spreading sports stacking around the world is a former circus ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. You're looking at an Australian Cup Stacking record holder. In April, Theo's heading to Singapore ...

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.