Playoffs get underway in many key states, and rankings are bound to be shaken up.
Video: Stefon Diggs high school highlights
See the Minnesota Vikings receiver in action as a prep.Playoffs are in full swing around the country, so expect major turnover in the Xcellent 25 National Football Rankings presented by the Army National Guard.
The Georgia AAAAAA bracket, the Texas Class 6A-I bracket, the Ohio Division I bracket and the California Pac-5 bracket all feature multiple ranked teams who will likely collide in the coming weeks.
No. 2 St. John Bosco and No. 3 Centennial are poised to meet in December, while No. 4 Allen and No. 7 Trinity could meet in another Top 10 showdown. Grayson, the nation's No. 10 team, could end up meeting No. 5 Colquitt County as well.
One team already making noise in the playoffs is Loyola Academy, the newly minted No. 25 team. In Illinois' Class 8A bracket, Loyola blasted defending state champion Stevenson 49-0 for its fifth shutout of the season. It has outscored opponents 459-73 this year.
It will be tested this week against Homewood-Flossmoor in one of the biggest games of the year in Illinois.
Click here to see playoff brackets from around the nationMaxPreps Xcellent 25 National Football Rankings presented by the Army National Guard

Dara Laja and Loyola Academy have their eyes on climbing higher now that they're in the Xcellent 25.
Photo by John Rowland
1. (1 last week) Bishop Gorman (Las Vegas), 11-0The Gaels cruised to a 63-7 win over Cimarron-Memorial.
2. (2) St. John Bosco (Bellflower), 10-0California's top-ranked team dominated Servite 70-7.
3. (3) Centennial (Corona, Calif.), 10-0In Thursday night action, Centennial pounded Norco 67-20.
4. (4) Allen (Texas), 10-0Allen wrapped up its regular season with a 58-23 win over Plano East.
5. (5) Colquitt County (Moultrie, Ga.), 10-0Colquitt County handed Camden County its first loss, 33-14.
6. (6) Ocean Lakes (Virginia Beach, Va.), 10-0Ocean Lakes beat Landstown 51-21. It has outscored opponents 547-66 on the season.
7. (7) Trinity (Euless, Texas), 10-0Idle.
8. (8) Katy (Texas), 9-0The Tigers closed the regular season with an impressive 24-0 win over previously unbeaten Cinco Ranch.
9. (9) South Panola (Batesville, Miss.), 11-0The Tigers defeated DeSoto Central, 41-14.
10. (10) Grayson (Loganville, Ga.), 10-0Idle.
11. (13) American Heritage (Plantation, Fla.), 8-1Idle.
12. (14) IMG Academy (Bradenton, Fla.), 9-0IMG received a victory after Triple A Academy forfeited.
13. (15) De La Salle (Concord, Calif.), 9-1The Spartans easily got past California, 56-0.
14. (17) Clay-Chalkville (Pinson, Ala.), 11-0Clay-Chalkville beat Cullman, 48-14.
15. (18) Male (Louisville, Ky.), 11-0Male continued its march toward a state title with a 49-3 win over Jeffersontown.
16. (24) Roswell (Ga.), 10-0Roswell remained perfect with a 24-7 win over Etowah.
17. (19) Chandler (Ariz.), 10-1Chandler knocked off Boulder Creek, 35-14.
18. (21) Colerain (Cincinnati), 10-1The Cardinals advanced in the playoffs with a 53-7 win over Dublin Coffman.
19. (16) St. Edward (Lakewood, Ohio), 10-1St. Edward came out flat against Cleveland Heights, but won 20-12.
20. (20) Gilman (Baltimore), 9-1Gilman avoided an upset bid by McDonogh, winning 35-28.
21. (12) DeMatha (Hyattsville, Md.), 9-1The Stags held on to beat rival Our Lady of Good Counsel, 28-23.
22. (23) Trinity Christian Academy (Jacksonville, Fla.), 10-0Trinity Christian Academy beat Pine Forest, 32-22.
23. (22) St. Thomas Aquinas (Fort Lauderdale, Fla.), 8-1Despite being depleted by injuries, Aquinas notched one of its more impressive wins of the year, a 19-14 victory over Flanagan.
24. (25) Archer (Lawrenceville, Ga.), 9-1Archer won easily over Brookwood, 37-7.
25. (NR) Loyola Academy (Wilmette, Ill.), 11-0Loyola routed defending state champion Stevenson, 49-0.