Garden Grove, the GGL champs and the fourth-seeded team in the tournament, will host Saddleback Valley Christian Wednesday, while La Quinta will visit San Gabriel Academy on that day.
The winners will meet on Saturday, May 18 for the title.
The Argos reached the final four with victories over Southland Christian, St. Bernard and Arrowhead Christian.
La Quinta advanced with wins over Pilibos, Loma Linda Academy and Mary Star of the Sea.
If the two GGL teams met in the finals, the Argos would have to be considered the favorite. They are 21-4 and already own two wins over the Aztecs. Saturday’s win over Arrowhead Christian 3-1 was Grove’s 16th straight win.
The Aztecs are 14-2, with their only losses to GGHS. They have a seven-game winning streak underway.