A lot has happened to the Raiders since the last time "Hard Knocks" aired on HBO last Tuesday night.

On Thursday, the Raiders and Packers played a preseason game in Winnipeg, but holes in the end zones forced the game to be played on an 80-yard field. Neither team played any of their starters. No one was happy, including the fans, who paid premium prices to see second and third-string players. It was a complete debacle that the Raiders won, 22-21.

On Sunday, Antonio Brown lost his second grievance regarding his preferred helmet, but still found a "happy ending," according to his agent Drew Rosenhaus.

And there's the roster crunch, which NBC Sports California's Scott Bair documents in his 53-man roster projection.

All of those topics will be discussed in the fourth episode of "Hard Knocks," which airs Tuesday night. Here's the trailer for the latest show.

The Raiders wrap up their preseason slate on Thursday against the Seahawks in Seattle.

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The final episode of "Hard Knocks," which will air next Tuesday, will put a nice bow on Raiders' training camp.