Week 14: Tennessee (7th least points allowed to opposing running backs)

Week 15: New England (6th)

Week 16: Kansas City (16th)

The Broncos face a challenging schedule to get into the real-life playoffs, and their running backs face a tall order in helping get them there. We think they have a 79.1% chance of getting to the postseason, but it may need to come from Trevor Siemian or Paxton Lynch and the passing game.

The Broncos' backfield faces three defenses in the top seven in terms of fantasy points allowed to opposing running backs. Through the first 13 weeks, outside of Melvin Gordon's bananas outburst against them, the Titans have not allowed a 100-yard rusher this season.

In fact, Booker may not have even been the lead back for much longer. Before Kapri Bibbs suffered an injury, rumors were swirling that Bibbs may have been getting ready to assume the lead role. Booker isn't completely in the clear, though, as the addition of Justin Forsett, who play for Denver coach Gary Kubiak in Baltimore, could spell trouble down the line.

Booker has been inefficient, averaging no more than 3.3 yards per attempt in any of his last five games, and when you couple that with the difficult schedule, he's going to be hard to trust moving forward.