REUTERS/Mike Stone Mark Cuban said the Dallas Mavericks are now the largest Dogecoin merchant in the world.The NBA basketball team has carried out more than 20,000 Dogecoin transactions, the billionaire said.The investor said if his team sells merch worth another 6.5 billion Dogecoin, the token's price could hit $1.Sign up here for our daily newsletter, 10 Things Before the Opening Bell.Billionaire Mark Cuban announced on Saturday the Dallas Mavericks have completed more than 20,000 transactions in Dogecoin, making his NBA team the largest merchant of the meme-based cryptocurrency.The "Shark Tank" host said if his team sells merchandise worth another 6.5 billion Dogecoin, the digital asset's price could hit $1.