This paper proposes the Common Data Format (CDF) v1.0.0, a standardized format for soccer match data. Soccer match data (match records, videos, events, tracking data, metadata, etc.) collected by various organizations have varying formats, specifications, and representations, making analysis difficult. To address these issues, CDF defines a minimal schema that ensures data clarity, contextual information (e.g., source), and completeness. This paper details the technical specifications of CDF, the choice of representation for data clarity, and the data delivery method.