In anticipation of HBO's "Hard Knocks" with the Buffalo Bills, here's a look at the most memorable moments from the sports reality documentary series.

Hard Knocks captured Dion Dawkins making this young fan's day by helping him meet Buffalo Bills quarterback Josh Allen.

11. 2016 Rams — Jeff Fisher's 7-9 rant When "Hard Knocks" followed the Los Angeles Rams, version 2.0, in 2016, the team was coming off its second 7-9 finish in three seasons.

Buffalo Bills running back James Cook is known not to smile. It's a running gag across Bills Mafia circles, but he had plenty ...

The Bears defense, including Andrew Billings and Austin Booker, had great exposure on HBO's Hard Knocks this week and now look to impress Patrick Mahomes.

The 8.3 IMDb Emmy-winning sports reality show, Hard Knocks, is back and dominating HBO Max charts at #1 in the U.S.