FILE - In this Sept. 9, 2019, file photo, Oakland Raiders tight end Darren Waller warms up before an NFL football game against the Denver Broncos, in Oakland, Calif. Waller, whose career has been hampered by substance abuse issues, had seven catches for 70 yards and proved to be a matchup nightmare for Denver's defense. Denver takes on the Raiders on Sunday. (AP Photo/D. Ross Cameron, File)
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