The incident began after a made free throw by Los Angeles, when Sparks rookie sensation Candace Parker got tangled with Shock's Plenette Pierson and both fell to the floor.
Pierson then charged Parker, who threw the Detroit center to the court.
Shock assistant coach Rick Mahorn came off the bench, apparently trying to restore order. But he incited more trouble when he inadvertently knocked Los Angeles forward Lisa Leslie to the floor.