Alabama has dominated Signing Day over the past half-decade, reeling in the nation's top recruiting class five years in a row. That gap has started to close, as USC very nearly overtook the Tide in the Class of 2015 consensus rankings and did rank No. 1 at Rivals and Scout.

There is now some real mystery regarding which recruiting power will sign the No. 1 class in February. Could Alabama's streak finally end?

In order to compete for the top mark, a team usually has to top 300 points on the 247Sports Composite. Alabama knows it well -- here are the top-ranked classes for each of the past 10 seasons.

Year	Team	Points
2006	USC	315
2007	Florida	310
2008	Notre Dame	295
2009	LSU	291
2010	Florida	324
2011	Alabama	299
2012	Alabama	310
2013	Alabama	319
2014	Alabama	320
2015	Alabama	311
	Average	309

What does that look like within a class? The average No. 1 class over the past decade has had 27.7 commitments, with 18.5 blue-chippers (4.6 of them five-star prospects).

That means the nation's top class has, on average, been 67 percent blue-chippers and 17 percent five-stars.

So these are the benchmarks for a No. 1-quality class ...

• Final Composite points: 309
• Final blue chip percentage: 67
• Five-star signees: Four or five

... and here are the teams with the best chances to hit them.

Alabama

• Current ranking: No. 4, 248 points
• Current blue chip percentage: 55
• Five-star commits: None
• Important targets (Crystal ball favorite): DT Rashan Gary (Michigan), DE Shavar Manuel (FSU), OLB Lyndell Wilson (Alabama), OLB Ben Davis (Alabama), OT Greg Little (Alabama), CB Nigel Knott (Alabama), WR Cavin Ridley (Alabama)

Florida State

• Current ranking: No. 3, 252 points
• Current blue chip percentage: 65
• Five-star commits: CB Levonta Taylor,
• Important targets (Crystal ball favorite): DE Shavar Manuel (FSU), WR Nate Craig-Myers (FSU), DT Dexter Lawrence (Florida), LB Keion Joyner (LSU), CB Trayvon Mullen (LSU), OT Landon Dickerson (Virginia Tech)

Georgia

• Current ranking: No. 8, 240 points
• Current blue chip percentage: 44
• Five-star commits: QB Jacob Eason
• Important targets (Crystal ball favorite): DT Rashan Gary (Michigan), DT Derrick Brown (Georgia), WR Kyle Davis (Georgia), TE Isaac Nauta (Georgia), WR Mecole Hardman (Georgia), ATH Demetris Robertson (Georgia), S Nigel Warrior (Georgia), CB Shyheim Carter (Georgia), RB Elijah Holyfield (Auburn)

LSU

• Current ranking: No. 2, 266 points
• Current blue chip percentage: 66
• Five-star commits: CB Saivion Smith, DT Edwin Alexander, S Eric Monroe
• Important targets (Crystal ball favorite): DT Rashan Gary (Michigan), DT Rashard Lawrence (LSU), OT Willie Allen (LSU), CB Trayvon Mullen (LSU), Shavar Manuel (FSU), CB Kristian Fulton (LSU)

Ohio State

• Current ranking: No. 1, 277 points
• Current blue chip percentage: 74
• Five-star commits: Nick Bosa
• Important targets (Crystal ball favorite): WR Binjimen Victor (Florida), CB Damar Hamlin (Ohio State), DT Antwuan Jackson (Auburn)

USC

• Current ranking: No. 6, 246 points
• Current blue chip percentage: 75
• Five-star commits: OLB Mique Juarez
• Important targets (Crystal ball favorite): OLB Caleb Kelly (Oklahoma), WR Theo Howard (USC), ATH Jack Jones (USC), Devin Asiasi (USC)

Plus a couple dark horses.

Auburn

• Current ranking: No. 20, 188 points
• Current blue chip percentage: 42
• Five-star commits: None
• Important targets (Crystal ball favorite): DT Rashan Gary (Michigan), DT Derrick Brown (Georgia), WR Nate Craig-Myers (FSU), OLB Ben Davis (Alabama), DL Marlon Davidson (Auburn), DT Shavar Manuel (FSU), OT Landon Dickerson (Virginia Tech), DE Antonneous Clayton (Auburn), RB Elijah Holyfield (Auburn)

Ole Miss

• Current ranking: No. 7, 243 points
• Current blue chip percentage: 42
• Five-star commits: QB Shea Patterson
• Important targets (Crystal ball favorite): DT Rashan Gary (Michigan), DE Jeffery Simmons (Ole Miss), WR A.J. Brown (Mississippi State), WR Drake Davis (Ole Miss), OT Greg Little (Alabama), OT Willie Allen (LSU), S Deontay Anderson (Ole Miss)