Tonight's three semifinals games involving Orange County teams also involve some familiarity.

In one case, it's between the two teams who meet again after facing each other in league play. In two others, it's with winning.

After all, the county has only three undefeated teams left, and two of them play tonight: Laguna Hills in the Southern Division against Norwalk and St. Margaret's in the East Valley Division against Maranatha.

In the night's other semifinal, Tustin and Canyon will get together for a rematch. Things went the Tillers' way the first time, but the Comanches have been hot lately.

Click on the following links to find detailed breakdowns of the matchups for each of tonight's semifinals:

• Tustin vs. Canyon

• Laguna Hills vs. Norwalk

• St. Margaret's vs. Maranatha

Contact the writer: preps@ocregister.com