“Where sport, ecology, and community converge.” Green Grid Tennis Arena redefines the typology of a sports venue as an integrated civic landscape. Inspired by the Saigon urban grid, the 3.500-seat arena extends beyond tennis by embedding layered terraces, adaptive roof structures, and green infrastructure. The project frames the central court within a porous system of plazas and public realms, transforming the stadium into a sustainable cultural catalyst. It merges performance, ecology, and community, positioning sport not only as competition but as a collective urban experience.