At 640 Clark Ave, Ortega Park gives the Sunnyvale area a tennis stop that can work for practice, casual match play, or a low-key hit. The court setup - 3 listed hard courts - gives the location enough structure for rallies, match play, serve work, and drills without guessing what is on site. The hard tennis playing surface is a good fit for steady bounces, clean footwork, baseline rallies, serve practice, and faster point play. Access timing is listed as Dawn to Dusk, so check the latest schedule before building a lesson, league match, or hitting session around it. No lights are marked in the listing, so daytime play is the safer assumption. The free-court detail is a real plus for players building a regular tennis routine without adding another weekly expense. When no reservation system is shown, expect public-court etiquette: share time, rotate after a set or hour, and check whether local leagues have priority. The court can support practicing tennis, point play, warm-up routines, and structured practice for anyone trying to build a better weekly tennis habit.