On First Take, Stephen A. Smith and Kendrick Perkins preview the Atlanta Hawks vs. New York Knicks playoff series, the Miami Heat and Charlotte Hornets facing off, along with what James Harden and Donovan Mitchell must prove during this NBA postseason. 0:00 Hawks vs. Knicks series 3:20 Fire Mike Brown?! 4:40 Heat-Hornets matchup 9:06 Harden playoff narrative 11:47 More to prove? 15:00 Cavaliers in the postseason ✔️ Subscribe to ESPN Unlimited: https://plus.espn.com/ #ESPN #NBA #FirstTake