Although continuity is the name of the game for the defending champion Oklahoma City Thunder, who bring back every player who saw at least 50 minutes of action during last season’s playoff run, the teams chasing them have made important changes this offseason, including the Knicks replacing Tom Thibodeau on the sideline. The Houston Rockets made the biggest splash, adding two-time Finals MVP Kevin Durant to a young core that finished second in the West last season before losing in the opening round.