The game has been close throughout. Indiana's largest lead has been 10, OKC's 6. The "Thunder" very reasonably could win. But this is the game within the game: Indiana has won every quarter. This is the game flow:
Indiana has had the lead the vast majority of the time. For Oklahoma City to win they will have to surge where in the past they have wilted: the 4th quarter. Oklahoma City will not win this game.