Embiid didn’t attend practices Sunday, Monday and Tuesday. He texted Brown a full 9 hours before Game 4 on Sunday to tell him not only that he was sick but also that he might not be able to play. Maybe he shouldn’t have. He stunk. He was even worse Tuesday, the Sixers’ worst playoff loss since Celtics beat them by 40 in Game 1 of the 1982 Eastern Conference finals.