MIAMI - Here's what's on the radar for Thursday's match against the Miami Heat (6:30 p.m., Fox Sports Southwest).The mighty have fallen: Three years ago, the Heat won the NBA Finals. In 2011, the Mavericks beat them for the crown. Now, these teams are a combined 25-57. The Heat's former big three of LeBron James, Dwyane Wade and Chris Bosh have all moved on - James back to Cleveland, Wade to Chicago and Bosh likely to retirement because of medical problems.Hexed against Heat?