July 18, 2018, 3:45 p.m. (ET)

 

Ever wonder what rugby sevens is? How it works? Who the players are? How one starts playing rugby? Why they don't wear helmets?

2016 Olympian and former NFL player Carlin Isles and collegiate football player Kevon Williams answer those questions and more in a LIVE Facebook chat with Team USA fans. Watch Isles, Williams and the rest of the U.S. men's and women's players compete against the best in the world at the Rugby World Cup Sevens 2018 in San Francisco July 20-22.

The networks of NBC are presenting the most U.S. coverage ever of the Rugby World Cup Sevens.