6. Stock skyrocketing: Dereck Lively II
When the Dallas Mavericks drafted Dereck Lively II, some fans thought that he wouldn't start over Dwight Powell.
After eight games, it's safe to say that Lively II is the best big on the team by a long shot. Although Lively II didn't start in Dallas' first game against the San Antonio Spurs, he has made a big impact in every game thus far.
Lively II is the best rim protector on the team, and when he's not on the floor, Dallas' defense is clearly worse.
Through seven games, Lively II averages 9.0 points, 7.7 rebounds, 1.1 assists, and 1.0 blocks per game. He is outperforming everyone's expectations and is proving that he is one of the best rookies in the NBA.
One of Lively II's best skills so far has been his ability to finish above the rim. He has great chemistry in the pick and roll with Luka Doncic and Kyrie Irving, and he is seemingly always available as a dump-off option.
Having a center that dunks everything is an underrated luxury, and Lively II dunks the ball whenever he has the chance. He also has better touch than expected in the paint, and that can likely be attributed to his work with Tyson Chandler on that part of his game.