Pebblebrook and South Cobb are bordering Cobb County schools that had beaten only three ranked teams in 40 years.

On Friday night, they delivered two of the more stunning upsets of the high school football season and ushered in a season-high 10 victories by unranked teams over top-10 opponents.

The regular season’s eighth Friday also featured several showdowns between ranked opponents.

They included No. 7 Calhoun beating No. 9 Blessed Trinity 32-27 and No. 6 Ware County beating No. 4 Coffee 35-3 in Class 5A; No. 2 Oconee County beating No. 9 Hart County 35-13 in Class 3A; No. 3 Prince Avenue Christian beating No. 8 Athens Academy 49-13 in Class A Private; and No. 3 Macon County beating No. 5 Schley County 54-38 in Class A Public

In a cross-class thriller, No. 7 Lowndes of 7A defeated Class 3A’s No. 1 team, Cedar Grove, 45-38.

Add those to the unmatched success of unranked teams and this was probably the most eventful Friday night of the season.

Pebblebrook, unranked since 2003, defeated No. 10 East Coweta 38-21 in a Region 2-7A game after leading the defending region champions – a 20-point favorite, according to the computer Maxwell Ratings – 31-7 at halftime.

South Cobb’s 17-15 victory over No. 4 Kennesaw Mountain was even more unlikely. South Cobb entered 1-5 overall and 0-4 in region play. Kennesaw Mountain was 6-0 and 4-0.