'Hard Knocks' preview: Meet Jonathon Jackson, the 'card doctor' of the Cowboys staff

In this preview of "Hard Knocks: Training Camp with the Chicago Bears," general manager Ryan Poles shares the most difficult part of training camp.

In this preview of "Hard Knocks: Training Camp with the Chicago Bears," safety Adrian Colbert shares the story of when he was hit by a car riding his bike at nine years old.

In this preview of "Hard Knocks: Training Camp with the Chicago Bears," quarterback Caleb Williams holds on to the ball he scored his first preseason rushing touchdown with at Soldier Field.

In this preview of "Hard Knocks: Training Camp with the Chicago Bears," wide receiver Keenan Allen states the challenges on facing cornerback Jaylon Johnson during practice.

In this preview of "Hard Knocks: Training Camp with the Chicago Bears," former NCAA and NFL coach Nick Saban talks with Bears head coach Matt Eberflus.

In this preview of "Hard Knocks: Offseason with the New York Giants," the Giants draft tight end prospect Theo Johnson in the fourth round of the 2024 NFL Draft.

In this preview of "Hard Knocks: Offseason with the New York Giants," general manager Joe Schoen negotiates the deal terms to acquire defensive end Brian Burns from the Carolina Panthers during 2024 free agency.

In this preview of "Hard Knocks: Offseason with the New York Giants," the Giants' front office staff discuss how fast they would run a 40-yard dash at the 2024 NFL Scouting Combine.

In this preview of "Hard Knocks: Offseason with the New York Giants," general manager Joe Schoen offers to trade their No. 6 overall 2024 draft pick to the Panthers' and Bills' general managers.

Watch a preview of the last episode of "Hard Knocks: In Season with the Miami Dolphins" where the Dolphins take on the Kansas City Chiefs in a 2023 AFC Wild Card Game.

Miami Dolphins head coach Mike McDaniel addresses his team after a Week 18 loss to the Buffalo Bills in this exclusive preview of "Hard Knocks: In Season with the Miami Dolphins."

Miami Dolphins running back Raheem Mostert breaks the Dolphins touchdown record in this preview of "Hard Knocks: In Season with the Miami Dolphins."

Miami Dolphins wide receiver Braxton Berrios decorates a Christmas tree with his girlfriend and influencer Alix Earle in this preview of "Hard Knocks: In Season with the Miami Dolphins."

Miami Dolphins quarterback Mike White shares the secret word given to Tua Tagovailoa to say on "Monday Night Football with Peyton and Eli" in Week 13.

Miami Dolphins receiver room tries convincing wide receiver Tyreek Hill to race Seattle Seahawks wide receiver DK Metcalf in this preview of "Hard Knocks: In Season with the Miami Dolphins."

In this preview of "Hard Knocks: In Season with the Miami Dolphins," safety Jevon Holland receives a game ball in the Week 12 matchup against the New York Jets.

Miami Dolphins head coach Mike McDaniel addresses the team in a meeting in this preview of "Hard Knocks: In Season with the Miami Dolphins."

New York Jets head coach Robert Saleh and general manager Joe Douglas reveal to wide receiver Xavier Gipson he's made the Jets 53-man roster on "Hard Knocks" with the New York Jets.

Green Bay Packers wide receiver Randall Cobb's family watches him take the field on "Hard Knocks" with the New York Jets.

New York Jets wide receiver Randall Cobb, wife tell kids there's going to be a new member of the "Cobb Mob" on "Hard Knocks" with the New York Jets.

Mentalist Oz Pearlman leaves New York Jets quarterback Aaron Rodgers stunned with card trick on 2023 season of "Hard Knocks."

New York Jets quarterback Aaron Rodgers and head coach Robert Saleh joke about QB Zach Wilson's sleeve length on 2023 season of "Hard Knocks".

On this week's Hard Knocks: In Season with the Arizona Cardinals, Cardinals surprise J.J. Watt with emotional farewell video from NFL legends, family.

It's been an emotional holiday week around the NFL, with Franco Harris's untimely passing touching all corners of the league. Here's the Arizona Cardinals wide receivers room spending a moment learning about the Steelers legend with their coach Shawn Jefferson in a scene from Hard Knocks on HBO Max. Don't miss the latest episode on Wednesday, December 28th available on HBO and to stream on HBO Max.

On this week's Hard Knocks: In Season with the Arizona Cardinals, defensive tackle Leki Fotu makes waffles from scratch in team meeting room.