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Denver Broncos quarterback Kyle Sloter (1) warms up before the start of practice on Aug. 14, 2017 at Dove Valley in Englewood.

Denver Broncos wide receiver Emmanuel Sanders (10) catches a pass during drills in practice on Aug. 14, 2017 at Dove Valley in Englewood.

Denver Broncos quarterback Paxton Lynch (12) warms up before the start of practice on Aug. 14, 2017 at Dove Valley in Englewood.

Denver Broncos quarterback Kyle Sloter (1) runs through drills during practice on Aug. 14, 2017 at Dove Valley in Englewood.

Denver Broncos quarterback Trevor Siemian (13) throws a pass duirng practice on Aug. 14, 2017 at Dove Valley.

Denver Broncos wide receiver Kalif Raymond (19) catches a pass during practice on Aug. 14, 2017 at Dove Valley in Englewood.

Denver Broncos offensive tackle Garett Bolles (72) cools off with a squirt of water to the face during practice on Aug. 14, 2017 at Dove Valley in Englewood.

Denver Broncos outside linebacker Von Miller (58) cant's make a catch during drills in practice on Aug. 14, 2017 at Dove Valley.

Denver Broncos Offensive Assistant/Quarterbacks Klint Kubiak works with quarterback Kyle Sloter (1) and quarterback Paxton Lynch (12) in drills during practice on Aug. 14, 2017 at Dove Valley in Englewood.

Denver Broncos defensive tackle Domata Peko (94) runs through drills with defensive tackle Tyrique Jarrett (98) during practice on Aug. 14, 2017 at Dove Valley in Englewood.