This place is a dive and it is going downhill fast. It used to be much nicer, but it looks like a dump. They've converted tennis courts into pickle ball courts, which is fine, but the pickle ball players have no tennis etiquette, so they walk past the tennis matches, mid play (clueless). The courts are filthy, lots of cracks, fences damaged.
https://www.yelp.com/biz/seal-beach-tennis-and-pickleball-center-seal-beach