Only 13 of 112 first-round playoff games were considered upsets, according to the Maxwell Ratings. These are the 13, with the projected margin of victory on the left. For Heritage of Ringgold, this year has brought the school's first winning season, first playoff berth and first playoff victory, and now the biggest playoff upset, per Maxwell, winning as a 21-point underdog. Five of the 13 here are northwest or northeast Georgia schools.

-21: Heritage-Ringgold 37, Stephens County 30

-20: West Hall 24, Troup 21

-12: Savannah 27, Cook 3

-9: Clarke Central 35, Carver-Atlanta 32

-7: Northwest Whitfield 31, Oconee County 20

-5: First Presbyterian 35, Aquinas 10

-5: Mount Pisgah Christian 35, Athens Christian 26

-5: Stephenson 24, Effingham County 7

-4: Peachtree Ridge 28, Archer 23

-4: Miller County 29, Bowdon 28

-3: Chattooga 44, Lamar County 14

-2: Irwin County 42, Dooly County 0

-1: Spalding 24, Eastside 17

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