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While Armstrong dropped because of his obvious rust and inactivity, Buckner will be dropping for much more serious reasons.
The Arizona receiver only came to be a Wildcat as a result of an indiscretion at Texas. He was arrested for (and charged with) criminal trespassing and resisting arrest.
After being granted the ability to transfer to Arizona, he did well but also committed a number of penalties on the field for Arizona.
Buckner doesn't pop off the tape with game-breaking speed or highlight-reel catches, but he's a solid player who is much faster than people give him credit for.
His calling card is his strength, which he uses to win out blocks against defensive backs on run plays and to fight for the ball on tough catches.
Buckner doesn't possess the elusiveness to generate explosive yards after the catch, but his strength makes him hard to take down.
He can set up moves by varying his pace in routes, and can create space against cornerbacks. With the ability to read coverage, he can be a real asset, even if it's just for a possession role.
With that comes his ability to track the ball in the air and smoothly adjust—he has a good eye for the ball, and only opens his arm at the last second.
Buckner needs to do some work to be a bit more reliable catching the ball, but it's nothing that screams red flag—he can get his hands on the ball just fine but brings it in poorly.
A long strider that needs to clean up his footwork, it's no question that Buckner would require some work to be effective.
He has enough talent to get him on the field—even this season.