The Oklahoma City Thunder regain the top spot in The Arizona Republic's recent NBA power rankings after defeating the previous No. 1, Cleveland.

We're at the midway point of the NBA season, so let's take a look at how teams are doing. The clear runaway squads are the Cleveland Cavaliers (35-6) and Oklahoma City Thunder (35-7), who both have a 6 1/2-game lead over the second-place teams in their respective conferences.

The NBA saw "The Rematch" turn into "The Blowout" between the Oklahoma City Thunder and Cleveland Cavaliers. Despite missing their two top centers, OKC destroyed Cleveland in its best win yet. The contest served as a possible NBA Finals preview.

What is going on with the Boston Celtics right now? The defending NBA champions have not looked like they are in the midst of a title defense season, and they have gone back and forth between wins and losses in each of their last seven games.