ENGLEWOOD — A behind-the-scenes look at Broncos training camp practice Wednesday during the acclimation period with observations and analysis from The Denver Gazette.

Play of the day

During a seven-on-seven period, quarterback Bo Nix delivered a strike to wide receiver Pat Bryant in the end zone for a touchdown. Bryant celebrated by throwing the football into the air and getting mobbed by teammates.

Position battle

Defensive back: They were tested often during practice in seven-on-seven periods. The Broncos are seeking a No. 3 safety after P.J. Locke signed with the Cowboys in free agency. Cornerback Jahdae Barron is also in competition for a greater role playing in a stacked secondary led by cornerback Pat Surtain.

Stock rising

QB Bo Nix: The starting quarterback underwent two ankle surgeries since being injured in the AFC divisional-round playoff win over the Bills. Nix appeared to have no limitations and took practice reps with the first-team offense in drills and seven-on-seven work. It was a strong start to training camp.

Stock falling

CB Blake Cotton: The reserve cornerback left practice early with the assistance of athletic trainers. Cotton is a rookie (Utah) signed after the Broncos’ offseason program concluded. Cotton is likely in competition for a spot on the practice squad in Denver.

Attendance check

Tight end Caleb Lohner did not practice Wednesday. All remaining available players — including outside linebacker Jonathon Cooper, who is facing domestic violence charges — were in attendance.

Injury report

Offensive lineman Nick Gargiulo is on the physically unable to perform list with a torn ACL. Inside linebacker Jordan Turner is on the non-football injury list with an undisclosed issue.

What’s next

Training camp continues with practice at 10 a.m. Thursday at Broncos Park. It is another acclimation practice with lower-intensity workouts and drills.

Ticket information

Free mobile tickets required for entry to open practices are sold out. Fans can return their tickets by emailing tickets@broncos.nfl.net up to 30 minutes after the start of practice each day. Refunded tickets will be made available to the general public through Ticketmaster on a day-to-day basis.

Friday is the next training camp practice open to fans with attendance limited to about 1,000 people.