Erik Spoelstra has entered training camp the past two seasons with a mantra of "letting go," that even from NBA championships, you have to move on. Saturday, when training camp opens at AmericanAirlines Arena, the Miami Heat will have no other choice. Because there is no alternative. With LeBron James' free-agency departure to the Cleveland Cavaliers, the 2014-15 Heat can't help but look decidedly different than the past four seasons, when June meant an annual appointment in the NBA Finals. Over those four seasons, preseason questions were limited, because James was there to provide the eventual answers. Lack of an All-Star answer at point guard? LeBron runs the offense and defends opposing playmakers when needed. Lethargic play against lesser opponents? LeBron will turn it up when needed most.