Let's play some tennis!
Coming from Eastern (southbound): Take a left on Sunset Rd. You will pass by the tennis courts on your right within about 500 feet. The parking lot entrance is after the tennis courts. To get to the courts, go around the bathrooms to your left on a concrete path and you'll arrive at some bleachers in between the 8 courts.
Coming from Eastern (northbound): Same as above, but take a right on Sunset Rd instead.
Even though there are 8 courts, Sunset Park can be very busy, so come earlier than the scheduled time if you can!