It is estimated that 10- 15% of the athletic population experiences back injuries. Athletes who participate in sporting events that require repeated hyperextension or flexion of the spine, such as cricket pace bowlers, may be particularly at risk. This study aims to find the effectiveness of Brent Brotzman Protocol in improving hip range of motion in professional fast bowlers with low back pain. 20elite professional cricket fast bowlers (mean age of 25.65) who had low back pain underwent Brent Brotzman rehabilitation protocol for 12 weeks. The outcome measures are bilateral hip range of motion. Pre – post rehabilitation measurements were compared using t test. The Results of the study showed that the range of motion of bilateral hip improved statistically significantly (p<0.001). This study concludes that Brent Brotzman Rehabilitation protocol is very effective in improving hip range of motion in professional fast bowlers with low back pain.