PISCATAWAY, NJ – NOVEMBER 10: Head coach Chris Ash of the Rutgers Scarlet Knights looks on against the Michigan Wolverines during the fourth quarter at HighPoint.com Stadium on November 10, 2018 in Piscataway, New Jersey. Michigan won 42-7. (Photo by Corey Perrine/Getty Images)Not all coaches will enter the 2019 college football season with the same level of job security. Some are on much hotter seats than others.Inevitably, there will be multiple coaches axed at the end of the season. In some cases, a school may opt to get the firing over with in-season and finish its slate out with an interim head coach.CBS Sports’ Dennis Dodd placed all 130 FBS head coaches into categories based on perceived job security. There are six classifications, ranging from 0 (Untouchable) to 5 (Win or be fired).Here’s what Dodd had to say about his rating system. The Hot Seat has long been an accurate predictor in terms of job security. Over the last four years, 12 of the 18 coaches rated 4 or worse (67 percent) eventually lost their jobs. (Colorado’s Mike MacIntyre and Texas Tech’s Kliff Kingsbury were listed in multiple years.) Going into 2019, there are only nine coaches on the proverbial hot seat (rating of 4 or higher). Something tells me that, in the end, there will be more than nine coaching changes — mostly because it seems that the coaching carousel is always spinning.Three unlucky coaches were slotted into the final group (five): Illinois’ Lovie Smith, Rutgers’ Chris Ash and New Mexico’s Bob Davie.Combined, this trio went 8-28 in 2018. Smith is 9-27 in his three seasons at Illinois; Ash is 7-29 in three years at Rutgers.Davie took the Lobos to back-to-back bowl games in 2015 and 2016, but has crashed to earth with consecutive 3-9 campaigns. There’s a strong chance at least one of these men will be fired after this year, and all three could be on their way out.Ironically, Rutgers and Illinois play each other on November 2. Smith and Ash could both be fighting for their jobs at that point.