HBO and The Ringer’s Bill Simmons opens the NBA summer mailbag to cover who will be next year’s Pascal Siakam, Paul George–to-L.A. conspiracy theories, the underrated Warriors, and more (2:55). Then Bill sits down with actor Kevin Costner to discuss his early years in Hollywood, his career as a director, making ‘Dances With Wolves,’ ‘Bull Durham’ stories, playing sports in movies, and more (44:45).