I used to live in Pasadena.
There was a tennis meetup group that had alot of activity.
Try going to meetup dot com and looking ... I have no idea if it still is going strong or not.
Forgot to mention ... we used to play mostly at Pasadena High School , and San Marino High School
3 x Völkl PB10 Mid + lead / BHBR 17 @ 49lbs