City of LA Dept of Recreation and Parks webpage has facilities for you to obtain Permits and know the Reservations Fees, and there are also links to Free and Pay Tennis facilities.
They also organize and conduct four tennis tournaments a year.
City of LA Dept of Recreation and Parks have two Open Tournaments, one National Tennis Rated Program tournament, and one Junior tournament. The four tournaments are sanctioned by the USTA and the SCS.
Tournament play is held at the Griffith Park Riverside Tennis Complex.
3900 W. Chevy Chase Dr., Los Angeles, CA 90039