Three things: Broncos vs. 49ers

Three things to watch in the Denver Broncos’ preseason game against visiting San Francisco on Sunday. Kickoff is set for 4 p.m. ET.

1. Peyton Manning: This will surely be Manning’s last preseason tune-up and the quarterback should get his most extensive playing time of the preseason. He has worked out the kinks well and needs to make continued progress in this game.

2. Third-down defense: Denver’s third-down defense has been strong this preseason. Another good outing would bode well heading into the regular season.

3. Run defense: Denver’s run defense wasn’t sharp last week. It must show progress.