Broncos training camp primer: Position battles, players with most at stake

Denver Broncos offensive tackle Garett Bolles signs autographs for fans after the first day of training camp at Dove Valley July 26, 2017. The Broncos open their 15th consecutive training camp at their Dove Valley headquarters Friday when veterans report. The first practice is Saturday at 9:30 a.m.

Thirty of the 90 players are new (33.3 percent) to the roster, including quarterback Case Keenum and as many as four other Week 1 starters. Here is a primer for the next month:

CAMP OBJECTIVES

1. GET/STAY HEALTHY

Unable to participate in any part of the offseason program or out during minicamp were linebacker Shane Ray (wrist), left guard Ron Leary (knee), right tackle Jared Veldheer (foot), tight…