Despite several early surprises, the Heat still hold top spot in rankings

What a difference a week -- and a trade -- can make.

Just seven days into the season the NBA landscape already looks drastically different than we anticipated. Much of that can be credited to the blockbuster trade involving James Harden just three days before the season. The rest can be chalked up to peculiar starts by a slew of would-be contenders, most notably a trio in the Western Conference.

There's already trouble in Tinseltown following the new-look Lakers' 1-3 start. The Thunder are still suffering from post-Harden stress disorder and dealing with the ongoing power struggle between their two remaining stars. And the Nuggets remain winless despite mile-high hype during the preseason and a mountain of talent.

But the first week also produced several positive storylines, highlighted by two outstanding starts separated by just 200 Texas miles. In Houston, Harden has wasted little time transitioning from Sixth Man to The Man, leading the league in scoring at 35.5 points per game and turning the Rockets into one of the most exciting teams in the league. And just when you think the league has lost its sense of normalcy, we're reminded that the annually overlooked Spurs are once again in position to make a title run.

What that in mind, it's time to give the Texas twosome their due and break down where all 30 NBA teams stand in SI.com's Power Rankings.

NBA Power Rankings