The vaccine mandate imposed by New York City has turned out to be extremely costly for one of the NBA's best players, Brooklyn Nets guard Kyrie Irving. He said Monday that he was given an ultimatum, get vaccinated with one of the experimental mRNA COVID-19 vaccines or forgo a contract extension worth more than $100 million. If he chose to be unvaccinated, Irving said, he was told by management "there's a level of uncertainty of your future, whether you're going to be in this league, whether you're going to be on this team." "It's not giving somebody an ultimatum to...