Expectations can be extremely dangerous in college football.

Ask any head coach for their preference and all would say flying under the proverbial radar is best-case scenario for teams with hidden issues, perhaps not as strong as they're perceived to be heading into a given campaign.

For several of the nation's name programs this fall, seasons didn't unfold as expected, many finishing outside of the Top 25 and battling irrelevancy heading into the new year. Cautious optimism is the preferred phrase behind closed doors, but too often narratives surface in a much more light, creating a false sense of worth coaches hate.

Nick Saban calls it rat poison and he's right.

Sifting through Power 5 conferences this season, there's a couple programs who immediately rise to the surface of disappointment. These teams battled throughout to stay above water, for some, clinging to national title hopes that never were really there.

Another faulty measure of value? Rome wasn't built in a day and a couple of these disappointing teams are going through program overhauls that take time.

"I think this team's confidence can sometimes be fragile, and that's the team we inherited and that's one of the things we're focused the most on fixing," Nebraska coach Scott Frost said after a season-ending loss to Iowa.

In particular order, here's a look at college football's underachievers during the 2019 season: