11:00 AM Tennis Tournament & Tennis Court Dedication Ceremony @ GPS Municipal Park. Come join us as we celebrate the newly refurbished Osius Park Tennis Courts! "Serve it Up Saturday" 11AM to 2PM. Fun & games for all ages; Hit with the Pros; Tennis Tournament; Dedication Ceremony; Team GPSIF vs. Team Grosse Pointe Shores Council & Staff; Free Refreshments. Hosted by Grosse Pointe Shores Improvement Foundation.