The correlation between core stability and athletic performance has not been determined in the available literature. Although several researchers have attempted to quantify the relationship between core stability/strength and functional performance, recent findings suggest that further research is needed to investigate important components and measurement of core stability in relation to athletic performance. Therefore, the primary purpose of this study was to examine the relationship among core power, core strength, core stability, and athletic performance in college soccer athletes. It is important to examine the correlation to assess core power and its effect on athletic performance because core power is an integrated component of core stability, strength and endurance during dynamic movement. In addition to the lack of current scientific evidence to support the correlation between core function and athletic performance, a valid core assessment has not been established yet. Therefore, the secondary purpose of this study was to establish a valid assessment tool of core.