Crucial playoff matchups loom for many ranked teams and could provide some upsets that rock the rankings.

The Allen Eagles continue to soar, though numerous playoff challenges await.
Photo by Glenn Gunn
Playoff showdowns loom for numerous teams in the MaxPreps Xcellent 25 National Football Rankings presented by the Army National Guard.
Perhaps the most intriguing bracket is Ohio's Division I playoff. Victories by No. 18 Colerain and No. 24 Moeller mean those two teams will square off this weekend.
Across the bracket, No. 19 St. Edward potentially awaits, if it can get past Austintown-Fitch and, potentially, rival St. Ignatius, which handed St. Edward its only loss of the season.
The Texas 5A-I bracket is littered with equally intriguing showdowns, including No. 2 DeSoto's matchup with previously ranked Coppell.
No. 22 Carroll is also alive in that region, while defending state champion Allen, the nation's No. 3 team, is favored to emerge from Region 2.
Northern California, with No. 6 De La Salle and No. 14 Folsom, also bears watching as playoffs continue.
Be sure to visit our national playoffs page to keep up with brackets from all across the country.
MaxPreps Xcellent 25 National Football Rankings presented by the Army National Guard
1. (1) Washington (Miami), 10-0The Tornado train keeps rolling along. This week, Washington defeated Glades Central 40-18.
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2. (2) DeSoto (Texas), 11-0To kick off its run toward a 5A title, DeSoto pounded Copperas Cove 67-21.
3. (3) Allen (Texas), 11-0Allen officially opened up the defense of its 5A-I title on Friday by beating Lake Highlands 63-6.
4. (4) St. Joseph Regional (Montvale, N.J.), 8-0Bye
5. (5) St. John Bosco (Bellflower, Calif.), 11-0Head coach Jason Negro's squad defeated Agoura 69-24 in the Pac 5 playoffs.
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Anthony Sweeney leads a De La Salle offense that has been outstanding lately.
Photo by Dennis Lee
6. (6) De La Salle (Concord, Calif.), 10-0Bye
7. (7) Central (Miami), 9-1In a high-scoring affair, Central outscored Boynton Beach 55-37.
8. (8) Northwestern (Rock Hill, S.C.), 12-0Northwestern's offense continues to hum along with a 55-22 win over West Florence.
9. (9) Serra (Gardena, Calif.), 11-0Serra downed Pacifica 48-16 to move to 11-0.
10. (10) Katy (Texas), 11-0With a 70-0 defeat of Memorial, Katy kicks off defense of its 5A-II crown.
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Myles Jack, a star on Bellevue's 2012 squad, is now lighting it up for UCLA.
Photo by Jeff Napier
11. (11) Mountain Pointe (Phoenix), 12-0There's not much to dislike about how Mountain Pointe is playing right now. The team downed Red Mountain 48-7.
12. (12) Bellevue (Wash.), 11-0While alum Myles Jack dominates the collegiate level, Bellevue continues to roll through high school foes, beating Glacier Peak 48-6.
13. (13) Hoover (Ala.), 12-0After a tightly contested first half, Hoover pulled away from Shades Valley to win 33-14.
14. (16) Folsom (Calif.), 11-0Folsom hit the 50-point mark for the fifth-straight week in a 50-13 win over Lincoln (Stockton).
15. (14) Miramar (Fla.), 11-0Monarch provided a challenge, but Miramar prevailed, 31-21.
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Colerain's ground game is difficult to stop.
Photo by Michael Noyes
16. (15) Manatee (Bradenton, Fla.), 11-0Manatee notched a tight victory over Vero Beach in the opening round of the Class 8A playoffs, winning 34-28.
17. (17) Byrnes (Duncan, S.C.), 11-1Clearly one of the best one-loss teams in the nation, Byrnes blasted Wando 42-14.
18. (18) Colerain (Cincinnati), 12-0After beating Pickerington Central 38-20, Colerain's season will be on the line this weekend against Moeller.
19. (19) St. Edward (Lakewood, Ohio), 10-1Rick Finotti's squad looked dominant in a 42-7 playoff win over Cleveland Heights. If not for a loss to rival St. Ignatius, this team would be in the mix for a No. 1 finish.
20. (20) Mallard Creek (Charlotte, N.C.), 12-0Mallard Creek continued to roll with a 62-7 victory over Ardrey Kell.
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Jenks is the Class 6A state title favorite in Oklahoma.
Photo by Robbie Rakestraw
21. (21) Jenks (Okla.), 11-0In a defensive battle, Jenks prevailed over Owasso 14-0.
22. (22) Carroll (Southlake, Texas), 10-1Carroll looks like a major threat to win the 5A-I title. It defeated Bowie 56-14.
23. (23) Bishop Gorman (Las Vegas), 10-2Bishop Gorman dominated Spring Valley 56-0.
24. (24) Archbishop Moeller (Cincinnati), 11-1With a victory over Elder, Moeller did its part to ensure a showdown with Colerain next week.
25. (25) Blue Springs (Mo.), 12-0Blue Springs continued its romp through Missouri competition with a 63-21 win over Lee's Summit.