Great park and the little gym is fantastic for the price. Nicest people ever. I'd skip the locker room but it's only $20/ mo no contract and such a nice setting. You can sign up online.
September 2021
Super solid little tennis court. There are two courts, it's even lighted, I've never stayed late enough to experience the quality of the lights though. Just be prepared to wait your turn, and to try to get your match in within an hour's time because people will be bugging you on the hour. You'd better play no ad here.
September 2019
2 decent park courts. I live in Wicker Park, and these are the closest decent courts I've been able to find. Also has good overhead lighting for night games, which are always fun. Free parking around the whole park.