NBA preseason takeaways: What we've learned about all 30 teams so far

Key Points:

• NBA preseason reveals teams focusing on foundational strategies, player roles, and offensive/defensive adjustments ahead of the regular season, with emphasis on early success to build momentum.
• Key player developments include Jalen Johnson's evolving offensive game for the Hawks, Jayson Tatum's health boosting Celtics' quick actions, and the Nets' youth movement led by Julius Randle's playmaking.
• Several teams are experimenting with lineups and tactics: the Bulls with varied screening angles, the Mavericks leveraging spacing and cutting with Kyrie Irving and Cooper Flagg, and the Lakers integrating new players like Walker Kessler to enhance defense and spacing.
• Defensive intensity and versatility are highlighted in teams like the Celtics, Raptors, and Wizards, while offensive creativity and player chemistry are focal points for the Nuggets, Grizzlies, and Jazz.
• Injuries and roster changes remain challenges for teams such as the Clippers, while others like the Heat and Bucks are adjusting to incorporate star players like Giannis Antetokounmpo and new offensive identities.