Introduction: Cricket fast bowling is one of the most widely studied fragments of cricket. The kinetics and kinematics of the fast-bowling action are evidently responsible for the performance and injury risks of the bowler. This study focuses on two crucial factors of the latter—lateral trunk flexion (LTF) and hip–shoulder separation (HSS) angle. Aim and objective: This study aims to establish the relationship between the HSS angle and LTF, the correlation between the LTF angle and ball release, and the correlation between the HSS angle and ball release in cricket fast bowlers. Materials and methods: A total of 10 collegiate fast bowlers participated in this study. The best delivery of the six bowled balls was chosen. In Vicon Nexus, the HSS angle and LTF angles were calculated for correlations. The parameters were then run on Pearson's correlation test with significance at p ≤ 0.05. Result: A total of 10 bowlers successfully completed the study. Their average ball speeds were 107.5 ± 9.99 km/hour. The study showed a strong positive correlation (r = 0.788, p = 0.007) between HSS angle and LTF. There was no significant correlation between LTF and HSS angles with ball speed. Conclusion: By establishing a strong relationship between LTF and HSS angle, this study provides a better understanding to the coaches to assign new injury risk assessment strategies. LTF angles, like HSS angles, can also be used to assess the risk of injury.