Denver Broncos vs. San Francisco 49ers: What to Watch For By Ken Pomponio August 19, 2016 Could Trevor Siemian win the starting QB job with a strong showing Saturday night. That tops the must-see list Saturday night in preseason game No. 2 for the Orange & Blue. Not a Subscriber? Become a Diehard today!Sign Me Up!Already a member?Don't forget to log in!