Our updated NBA power rankings for week 13 of the season reveals the 10 best and 10 worst teams in the league right now.

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.

All-Star voting ended Monday, and for the first time, this Power Rankings host was given a ballot. The coming weeks will see a slow reveal of all the All-Star Weekend participants, with starters set to be announced Thursday night.

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

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.

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 Cavaliers outlasted the Thunder in their previous matchup a week prior — a matchup that turned into an instant classic. The highly promoted rematch wasn’t nearly as entertaining — unless, of course,