WHITTIER —The La Serna flag football team shocked the world when they upset No. 1 seed Mira Costa in the first round of the CIF-Southern Section Division 3 playoffs

La Serna celebrates a TD in the second half. Glendora played La Serna in the Girls flag football CIF-SS Division 3 semifinal on Nov. 1, 2025 in La Vern CA. (Photo by John McCoy, Contributing Photographer)

Hailey Travisano #22 of Glendora runs the ball. Glendora played La Serna in the Girls flag football CIF-SS Division 3 semifinal on Nov. 1, 2025 in La Vern CA. (Photo by John McCoy, Contributing Photographer)

La Serna celebrates a 20-0 win over Glendora in the Girls flag football CIF-SS Division 3 semifinal on Nov. 1, 2025 in La Vern CA. (Photo by John McCoy, Contributing Photographer)

La Serna celebrates a 20-0 win over G

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