The Colorado defense was torn to shreds by TCU's ground game last week, and it's led to an overreaction in this line. Air Force opened as a 14.5-point favorite but seeing it allow over nine yards per carry helped move this line to 17.5. There's a key difference, here, however. Last week, Colorado had to worry about a TCU offense coached by Sonny Dykes. An offense it expected to pass. This week against Air Force, the Buffs don't have to worry nearly as much about the back end and can focus on stopping the run.