Cooper Flagg was named the NBA's Rookie of the Year for the 2025-26 season this week, becoming the third player in Dallas Mavericks history to win the award, joining Luka Doncic and Jason Kidd. Notably, the greatest player in franchise history, Dirk Nowitzki, isn't on that list, so Flagg could be on an all-time path. However, Nowitzki still watches a lot of games. Now that he's on the Amazon Prime NBA studio show, he can voice his opinion, and he seemed really proud of Flagg winning the award, especially with everything Flagg had to deal with early in the year. "I don't want to sound like a homer here, I do anyways. I love Kon, and I think they both deserved it. You could've gone Co-Rookie of the Year, but I watched Cooper all year long," Nowitzki said. "The stuff he had to deal with early, with all the negativity around and the booing. There was a lot happening that whole season. But the way he kept his head down, worked, got better, started at point guard at 6'9", something he's never done.…