The normal range of motion of your elbow from full extension to full flexion is 0 degrees to about 140 degrees. For most activities, you need a range of motion of 30 degrees to 130 degrees.

reports from Brisbane indicate that his elbow extension during tests had an average of more than double of the tolerance limit of 15-degrees as allowed by the International Cricket Council (ICC).

What is an illegal bowling action? An illegal bowling action is one in which the bowler's 'elbow extension' exceeds 15 degrees while he is in his delivery stride. The ICC set the 15-degree limit ...