NFL July 18, 2023 3:17 pm A brief history of HBO's reality show “Hard Knocks” HBO and NFL Films’ 2023 season of “Hard Knocks” debuts Tuesday, Aug. 8. Here is a look back at the show’s origins. US & World Videos 1:02 Celtics, Pacers to meet in 2024 Eastern Conference Finals 1:01 2024 PGA Championship third round recap 0:52 2024 PGA Championship second round recap 0:57 Scottie Scheffler arrested on way to PGA Championship 0:54 2024 PGA Championship first round recap