Recruiting is unpredictable, as many things can happen between now and national signing day.
Each coach in the country has to be prepared for every scenario. Texas A&M's Kevin Sumlin must be ready if one of his top commitments flips to another school, and Clemson's Dabo Swinney must be prepared in case quarterback Deshaun Watson decommits.
Michigan's Brady Hoke would be at a loss for words if his top target signed with a rival school and, yes, even Alabama's Nick Saban has recruiting nightmares.
The Tigers have a commitment from quarterback Deshaun Watson, who could be their next superstar. Watson could start as a true freshman and has the talent to make an early impact.
However, Dabo Swinney must twist and turn at night at the thought of Watson signing with another school.
Swinney could be paranoid about Watson ending up at Georgia or even Auburn. Clemson has worked hard to secure Watson's commitment. Seeing him with another school would be a nightmare.
Ole Miss, which signed a terrific class in 2013, is once again working on another great class. The Rebels have 17 commitments as Hugh Freeze works to sustain last year's success.
Defensive lineman Elisha Shaw is a prospect who Freeze has made a priority. Although Georgia and Alabama are key suitors for Shaw, the majority of the experts at 247Sports predict he will sign with Ole Miss. Auburn is also a darkhorse in the race for Shaw.
Freeze proved last year that he's capable of beating out big-name schools for recruits, so he's prepared to battle the Crimson Tide and Bulldogs for Shaw. A nightmare scenario for the lead Rebel would be for Shaw to wait until national signing day and spurn Ole Miss for one of its SEC rivals.
The Irish, who will be in the hunt for a BCS bowl this season, are having a good recruiting cycle. Brian Kelly has 11 commitments, of which 10 are 4-star recruits, according to 247Sports.
Kelly's best commit is running back Elijah Hood, who is from North Carolina. Although Hood is expected to honor his Irish commitment, Kelly would experience a nightmare if Hood flipped to the Tar Heels on national signing day.
Expect Kelly and his staff to monitor Hood closely until they finally get him enrolled at Notre Dame.
Kentucky, who is enjoying its best recruiting cycle in years, has a commitment from quarterback Drew Barker. Although Barker is solid in his pledge to pass for the Wildcats, a nightmare scenario has to have entered Mark Stoops' mind.
Barker is the centerpiece for Stoops' class and losing him may cost Kentucky several other prospects. Should Barker suddenly change his mind and commit to rival South Carolina or Tennessee, Stoops would be pinching himself to see if he can wake up from this nightmare.
Florida State, which has 15 commitments, failed to land offensive tackle Laremy Tunsil in 2013. David Sharpe, a great left tackle prospect from Jacksonville, is now a top target for Jimbo Fisher.
The Seminoles have a need for offensive linemen, including an elite left tackle prospect such as Sharpe. According to 247Sports, Sharpe is seriously considering Florida State.
However, Sharpe also is considering bitter rival Florida. Should Sharpe sign with Florida, that would make it two straight years that Fisher could not land his top left tackle target.
Michigan, who's main rival is Ohio State, knows it has a formidable recruiting foe in Urban Meyer. The Buckeyes' head coach is one of the best in the business and can swoop in at anytime to land a recruit another school feels it has sealed up.
Michigan's top uncommitted target is defensive end Da'Shawn Hand, as the Wolverines have a need for pass rushers. It would be a shocking nightmare if Meyer somehow made a run at Hand, landed him and for Michigan to see Hand wearing scarlet and gray when it plays Ohio State in 2014.
Tennessee, which has commitments from running back Jalen Hurd and safety Todd Kelly Jr., has locked up the state's two best recruits. The next great in-state prospect for the Vols is receiver Josh Malone.
Although Hurd and Kelly gave Butch Jones early commitments, Malone seems intent on letting his recruitment transpire in a slower fashion. Kelly and Hurd are recruiting for Tennessee and talk to many recruits about joining them in Knoxville.
A nightmare scenario for Tennessee would be not only for Malone to commit to another school, but for him to recruit Hurd and Kelly to join him elsewhere.
Texas, who has a great class of 19 commitments, has revolutionized modern recruiting. The Longhorns begin recruiting prospects earlier than many other programs and wrap up their recruiting classes by the summer.
A major recruiting tool for Mack Brown are junior days. This is where Brown works his magic and routinely collects a significant amount of commitments.
A nightmare recruiting scenario for Texas would be if the NCAA introduced a rule forbidding junior days and the contacting of recruits before the summer before their senior season.
Alabama, which landed a commitment from quarterback David Cornwell, has yet another excellent recruiting class. The Crimson Tide have several commitments that are the envy of other programs.
However, even Alabama has needs, and one of them is at left tackle. The Crimson Tide know Cyrus Kouandjio will not be around much longer, as the incumbent left tackle will be a first-round pick whenever he leaves Tuscaloosa.
This is why Nick Saban fiercely covets left tackle prospect Cameron Robinson. Robinson has the size at 6'6" and more than 330 pounds to go with the talent to fill Kouandjio's shoes early in his career.
So, Saban could experience a surreal nightmare if Robinson decided to play for SEC rival LSU.
The Aggies, who are the sexy pick in the SEC this year, have 14 commitments and the top class in the country. Kevin Sumlin has put together another great class and he understands that his program needs defensive help.
He has eight commitments from defensive recruits and none are bigger than the pledge he has from outside linebacker Hoza Scott. Scott is an excellent player with great athleticism. He will be the leader of the Aggies' defense in a few seasons.
Sumlin and Texas A&M have high hopes for Scott, as he could be a team captain by his junior year. Scott decommitting and signing elsewhere would be a crushing blow to Texas A&M.
Edwin Weathersby is the College Football Recruiting Analyst for Bleacher Report. He has worked in scouting/player personnel departments for three professional football teams, including the New York Giants and Cleveland Browns.