It's the final opportunity for Crenshaw and Narbonne to match up against Southern Section teams and represent the City Section. Both schools face tough challenges at home on Friday.
Crenshaw (2-2) will face St. John Bosco (3-1) on Time Warner Cable. Narbonne (1-3) will take on Los Alamitos (4-0).
Crenshaw has struggled against non-City Section opponents, losing to Long Beach Poly, 54-14, and Bakersfield, 42-12.
Narbonne has played well at times in losses to Poly, Alemany and Gardena Serra.
"We've had a good week and a half to work on a lot of things in practice," Narbonne Coach Manuel Douglas said.
After this week, league play begins for Crenshaw and Narbonne, and both are favored to win their league titles.