Welcome to the Dallas Mavericks, Kyrie Irving. The Mavericks have traded for the Brooklyn Nets’ uber-talented, controversial All-Star, according to a person familiar with the deal. In return, the source said, Dallas sent Brooklyn two starters — guard Spencer Dinwiddie and versatile forward Dorian Finney-Smith — a 2029 first-round pick and second-round picks in 2027 and 2029. After previous executives failed to land a co-star next to Luka Doncic with a blockbuster Kristaps Porzingis trade, general manager Nico Harrison and Co. took their biggest — and riskiest — swing four days before the NBA’s Feb. 9 trade deadline. On the...