2018 Outlook: Keenum takes over as the starter in Denver after a career-best season in 2017, when he completed 68 percent of his 481 attempts for 3,547 yards, 22 touchdowns and 7 interceptions. Keenum's completion percentage trailed only Drew Brees (72 percent) for best in the league, and he was charted as off-target 14 percent of the time, which was third best (Drew Brees, Carson Palmer). Keenum posted the eighth-most fantasy points during the 14 weeks he was on the field for at least 90 percent of the pass plays. For all intents and purposes, Keenum was a fringe QB1. His supporting cast isn't quite as good in Denver, but he will have Demaryius Thomas and Emmanuel Sanders at his disposal. Keenum should be viewed as a back-end QB2.