Cooper Flagg is your 2025-26 NBA Rookie of the Year. The No. 1 overall pick lived up to every bit of the hype, becoming the cornerstone the Mavericks envisioned from Day 1. The Flagg File: 🔹 21.0 PPG 🔹 6.7 RPG 🔹 4.5 APG 🔹 1.2 SPG A new era in Dallas has arrived.