Many good teams were not selected to the CIF-Southern Section baseball playoffs.
Take a look at Santa Margarita, for example. The Eagles missed qualifying for the Division 1 playoffs by one game. They are good enough, though to win the championship of several Orange County leagues.
Alphabetically, the best teams that did not get in:
Brea Olinda
Buena Park
Capistrano Valley
El Modena
Fountain Valley
Los Alamitos
Newport Harbor
Northwood
Pacifica
San Clemente
Santa Margarita
Servite
Tesoro
