In the rapidly evolving field of Sports AI, accurate and well-labeled datasets are essential for developing effective AI models that can track athletic movements, analyze biomechanics, and operate under varying conditions such as different lighting and weather. The text highlights five leading data labeling platforms for sports AI in 2025, each catering to unique needs within the industry. Encord is praised as the top choice, offering an all-in-one solution for complex multimodal workflows, including video and 3D annotation, smart automation, and tools for handling sensitive data, making it suitable for professional sports teams and tech companies. Other platforms like Segments.ai, Scale AI, Kili Technology, and CVAT are noted for their capabilities in multi-camera synchronization, large-scale broadcast labeling, lightweight project support, and academic research, respectively, addressing the diverse requirements faced by sports AI developers.