I definitely think they could. I kinda feel more nervous(i'm a Warriors fan) about them than the Spurs. I mean for the season the Spurs were better and a more complete team than the Thunder. And obviously a great head coach. But at this very moment the Thunder seem to be playing their best basketball of the season/peaking at the right time. Durant and Westbrook sensing this could be their last chance to win a title together and for OKC. While the Spurs seem to not be playing at the super high level(2nd best team in basketball) that they were during the regular season. Thunder rising while the Spurs are limping, especially Duncan. And when you have Kevin Durant and Russel Westbrook on your team either, or both, can explode and light up the scoreboard taking over a game or series if they stay hot. Where Spurs play solid fundamentals/good team ball. But they don't have the kinda fire power to hang with the Warriors where the Thunder can if their at the top of their game. The Spurs are like the crafty old veterans that won't beat themselves but never blow you away. While the Thunder are the young guns sometimes beating themselves but if their ON/IN THE ZONE can come at you like an unstoppable force blowing your doors right off! Will be a exciting series to watch if it's the Thunder as it will be fast paced shoot out.