Last summer, the MLB Crypto Baseball launched to allow users to pay in Ether to buy digital avatars tied to specific moments in recent games. They can then sell the items, or in some cases, earn rewards and stickers.
"We talked a long time ago about bitcoin and whether we should accept it as payment for MLB.tv and some of our other products, and we opted not to," Gersh says. "At the end of the day we decided that isn't our business, we're not in the speculation business. We're in the business of delivering baseball to fans. So this game is a more interesting intersection of blockchain technology and what we do."
https://www.engadget.com/2018/07/13/major-league-baseball-is-going-crypto/