Joel Embiid Isn't Having Fun

<p>Joel Embiid says he's not having as much fun as he used to. Derek and Rich discuss ow much of a concern that is. Embiid claims it's because he's trying to be mature and not talk trash, but is there more to it? Also: the Sixers' defense is dominant, Matisse Thybulle has turned a corner, and the starting lineup is finally fully healthy. </p> <p>Get access to special subscriber-only podcasts from Sixers Beat plus all The Athletic’s content - go to theathletic.com/sixersbeat to get 40% off an annual subscription.</p> <p> Subscribe on iTunes</p><p> </p><...