Oklahoma City won 60 games last season and finished as the No. 1 seed in the Western Conference.
All-Star point guard Russell Westbrook was injured in the first round of the playoffs, however, and the Thunder were beaten in five games by Memphis in the conference semifinals.
Westbrook underwent surgery last spring. He had a second surgery on Oct 1 and is expected to miss 4-6 weeks of the new season.
Corbin still believes Oklahoma City "will be right there at the end" because "they are a still a good ballclub. ... With Westbrook out, Durant will increase his role as a ballhandler. The ball will be in his hands more."