Here are the latest CIF Southern Section Top 25 football rankings from High School On SI.

TOP 25 RANKINGS, OCT. 18

1. Santa Margarita (8-0)

Eagles defense continues to dominate. QB Fletch Palmer continues to play clean football. | vs. JSerra

2. Sierra Canyon (8-0)

The Trailblazers pitch another shutout in a big win over Chaminade. | at Notre Dame

3. St. John Bosco (6-2)

The Braves need to re-evaluate some things after an underwhelming offensive performance in their loss to Santa Margarita. | at Servite

4. Mater Dei (6-2)

The Monarchs offense is starting to click, which makes them very, very dangerous. | vs. Orange Lutheran

5. Corona Centennial (5-3)

The Huskies are hitting a stride, but will be without star WR Quentin Hale for a few weeks. | at Chaparral

6. Orange Lutheran (5-3)

The Lancers have separated themselves from the bottom of the Trinity League. | at Mater Dei

7. San Clemente (7-0)

The Tritons Alpha League showdown with Mission Viejo was canceled due to fires. | at San Juan Hills

8. Mission Viejo (6-1)

No game this week due to fires. | at Los Alamitos

9. Chaparral (5-3)

The Pumas have a monster game against Corona Centennial this week. | vs. Centennial

10. JSerra (4-4)

The Lions have lost three straight in the Trinity League with Santa Margarita and Servite still on the schedule. | at Santa Margarita

11. Bishop Amat (7-1)

The Lancers take down Notre Dame and will get a chance at Sierra Canyon at the end of the season. | vs. Loyola

12. Crean Lutheran (6-2)

The Saints are hitting a groove after a narrow win over La Habra at SoFi Stadium. | at Corona del Mar

13. Inglewood (7-1)

Sentinels will be a top seed in Division 2 playoffs. | at Leuzinger

14. Palos Verdes (7-1)

Ryan Rakowski had a monster game in the SeaKings' win over Mira Costa. | at Redondo Union

15. Pacifica/Oxnard (6-2)

Tritons took down Bishop Diego to bounce back from last week's loss to Newbury Park. | vs. St. Bonaventure

16. Notre Dame/Sherman Oaks (7-1)

The Knights fall big to Bishop Amat, but have already exceed expectation. | vs. Sierra Canyon

17. Norco (5-3)

Cougars fall to Centennial. Big game against Vista Murrieta this week. | vs. Vista Murrieta

18. Capo Valley (7-1)

Gave Corona del Mar its first loss of the season on Saturday. | vs. Villa Park

19. Corona del Mar (7-1)

CdM drops its first game to Capo Valley. | vs. Crean Lutheran

20. Chaminade (5-3)

The Eagles are trying to figure things out without its starting QB. There's still time ... | vs. Gardena Serra

21. Huntington Beach (8-0)

Oilers stay unbeaten with a win over Western. | vs. Troy, Thursday

22. Westlake (7-1)

Beat Ventura 21-3 to stay unbeaten in the Channel League. | at Santa Barbara

23. Orange (8-0)

Star Thomas continues to lead the way ... | vs. Irvine, Thursday

24. La Serna (7-1)

Big win over Cerritos, 57-7. | vs. Mayfair

25. San Juan Hills (7-1)

The Stallions beat Yorba Linda 14-10. | vs. San Clemente

NEW: Capo Valley
DROPPED: Tustin