Now that the offseason is winding down and training camp approaches, we have a good idea of what rosters will look like in a few months.

Turner Sports' David Aldridge released rankings of every team based on their offseason acquisitions and departures, and he concluded that the Oklahoma City Thunder had the most productive offseason.

The Thunder only lost four players, keeping most of their roster intact. The biggest departure was Carmelo Anthony, and his release is considered by most analysts to be an “addition by subtraction” move, as his sole season with the team was disastrous. Now that his expensive contract is off the books, the Thunder are free to pursue more productive players while staying under the cap.

Aldridge points to the return of guard/forward Andre Roberson as the key point of the Thunder's improvement.  Although Roberson is notorious around the league for his poor free throw and 3-point percentage, he is a lockdown perimeter defender. When he was on the floor, the Thunder's defensive numbers massively improved and they plummeted when he sat on the bench.

The second factor that convinced Aldridge of the Thunder's effective offseason was the return of forward Paul George. George had been linked to the Los Angeles Lakers for years, and many expected the All-Star to sign with his hometown team this offseason. But the Thunder shocked the NBA world by locking up George for four years, giving them a solid core of George, Russell Westbrook, and Steven Adams to build around.

While you can argue that other teams like the Lakers or Warriors had a better offseason with their huge signings, there's no denying the Thunder made some very productive moves.