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ENGLEWOOD, CO - AUGUST 17: Denver Broncos quarterback Mark Sanchez (6) Denver Broncos quarterback Trevor Siemian (13) and Denver Broncos quarterback Paxton Lynch (12) in drills during a joint practice with the San Fransisco 49ers August 17, 2016 at Dove Valley. (Photo By John Leyba/The Denver Post via Getty Images)

ENGLEWOOD, CO - AUGUST 17: Denver Broncos quarterback Mark Sanchez (6) Denver Broncos quarterback Trevor Siemian (13) and Denver Broncos quarterback Paxton Lynch (12) in drills during a joint practice with the San Fransisco 49ers August 17, 2016 at Dove Valley. (Photo By John Leyba/The Denver Post via Getty Images)