Project Description With the escalating concerns surrounding concussions in contact sports, there is a need to better understand the biomechanics behind these injuries, especially in professional leagues such as the NFL and NHL. Leveraging the tools and insights garnered from our prior project SNIC 2022/22-770 on 3D human pose estimation, this continuation seeks to analyze and decipher the biomechanics of concussions as evidenced in the latest seasons of NFL and NHL games. Objective The primary goal of this continuation project is to utilize the monocular markerless capture system previously developed and apply it to real-world settings: analyzing video footage from the latest NFL and NHL seasons. This would serve to identify the biomechanical parameters during high-speed sporting incidents leading to concussions. Method We will process the NFL and NHL season footage using our markerless motion capture system. The primary focus will be on players involved in concussion-causing incidents. All analyses will be facilitated using the GPU infrastructure in Alvis. Expected Outcome Development of an Analytical Process: This process will be tailored specifically for NFL and NHL game footage. This will develop a pipeline to inform finite element simulation with detailed 3D kinematics. Accurate Biomechanical Estimation: By analyzing the game footage, we expect to accurately estimate the biomechanical parameters leading to concussions during high-speed plays. This estimation will be validated using any available ground truth data, similar to our previous project. Insights into Concussion Mechanisms: The ultimate goal is to provide a comprehensive understanding of the mechanisms behind concussions in NFL and NHL games. This knowledge will be invaluable in future efforts to mitigate the risk of such injuries, offering both tactical and equipment-based recommendations for player safety. In conclusion, this continuation project aims to bridge the gap between theoretical analysis and real-world applications, providing actionable insights into the prevention and management of concussions in contact sports.