We propose a robust basketball player tracking framework for multi-cameras which have high portion of overlapping with each other and are set at human height. A novel detection grouping method is proposed to more correctly merge the projected detection results. Instead of using linear motion assumption to predict the human motion, we applied a regional consistency assumption to calculate the motion affinity. Further-more, we design a one-to-one clustering method to associate the most matching tracklets together using correlation values between tracklets and generate final trajectory results. Since there is no public labeled overlapping cross-cameras basketball dataset, we collected our own dataset, MISBasketball, and labeled the ground truth to evaluate the proposed tracking framework.