In 18 seasons of preseason Hard Knocks, 18 teams have avoided the show

As the Jets prepare to be the first team in the history of the Hard Knocks series to submit against their will, it's worth noting that most teams have managed to avoid the assignment altogether.As noted by Mike Reiss of ESPN.com in his excellent Sunday rundown of Patriots-related news and notes, the Pats are one of 18 teams that have yet to have Hard Knocks at their doorstep.That was a surprise, so I went down the rabbit hole of Hard Knocks history. It started in 2001, with the Ravens. That was