The NBA All-Star Game is Feb. 19. And nobody will know the All-Star rosters until that night. Not even the players themselves. The team captains – probably LeBron James of the Los Angeles Lakers and either Milwaukee’s Giannis Antetokounmpo or Brooklyn’s Kevin Durant – will make their picks in a live, televised pregame segment shortly before the game begins in Salt Lake City. The NBA and the National Basketball Players Association announced the format change on Tuesday night. This will be the sixth time that the league has used the format where captains choose their teams, but in each of…