Posted in SPORTS Sondheimer: Centennial’s sensational finish gets it the No. 1 seeding in regional playoffs February 26, 2023 Corona Centennial’s last-second win over St. John Bosco helps give defending state champion the No. 1 seeding in Open Division regional playoffs. https://www.latimes.com/sports/highschool/story/2023-02-26/southern-california-regional-basketball-playoff-seedings-centennial-sierra-canyon