- Now Playing
01:46Richard Sherman says he got interested in crypto after he missed out on making millions - Now Playing09:14How IndyCar pit crews train before the Indy 500
- Now Playing09:14How Indy Car drivers train to race a $900,000 car
- Now Playing09:14How Indy Car drivers train to race a $900,000 car
- Now Playing09:44Why so many Olympians are broke
- Now Playing08:49How the USA women's water polo team is training for its third straight Olympic gold medal
- Now Playing04:19Why fighting is allowed in the NHL, and there are no plans to ban it
More from sports
