Men's Test Match Appendix A Definitions 9: Bowlers

9.1. Over the wicket / round the wicket – If, as the bowler runs up between the wicket and the return crease, the wicket is on the same side as his/her bowling arm, he/she is bowling over the wicket. If the return crease is on the same side as his/her bowling arm, he/she is bowling round the wicket.

9.2. Delivery swing is the motion of the bowler’s arm during which he/she normally releases the ball for a delivery.

9.3. Delivery stride is the stride during which the delivery swing is made, whether the ball is released or not. It starts when the bowler’s back foot lands for that stride and ends when the front foot lands in the same stride. The stride after the delivery stride is completed when the next foot lands, i.e. when the back foot of the delivery stride lands again.

9.4. The Illegal Bowling Regulations are the ICC’s regulations governing Illegal Bowling Actions.

9.5. An Illegal Bowling Action is a bowling action where a bowler’s Elbow Extension exceeds 15 degrees, measured from the point at which the bowling arm reaches the horizontal until the point at which the ball is released (any Elbow Hyperextension shall be discounted for the purposes of determining an Illegal Bowling Action).

9.6. Elbow Extension means the motion that occurs when a bowler's arm moves from a flexed (bent) position at the elbow, to a more extended (straight) position (full Elbow Extension occurs when the arm is straight).

9.7. Elbow Hyperextension is the motion that occurs when a bowler's elbow extends beyond the straight position.

9.8. The ICC Bowling Action Report Form is the form provided for by Article 3 of the Illegal Bowling Regulations, by which an umpire and/or the ICC Match Referee may submit a report relating to a suspected Illegal Bowling Action.