Men's T20I Match Appendix A Definitions 5: Umpires and decision-making

5.1. Umpire – where the description the umpire is used on its own, it always means ‘the bowler’s end umpire’ though this full description is sometimes used for emphasis or clarity. Similarly the umpires always means both umpires and the third umpire. An umpire and umpires are generalised terms. Otherwise, a fuller description indicates which one of the umpires is specifically intended. Each umpire will be bowler’s end umpire and striker’s end umpire in alternate overs.
5.2. Bowler’s end umpire is the umpire who is standing at the bowler’s end (see paragraph 4.4) for the current
delivery.

5.3. Striker’s end umpire is the umpire who is standing at the striker’s end (see paragraph 4.3), to one side of the pitch or the other, depending on his/her choice, for the current delivery.
5.4. On-field umpires shall mean, collectively, the bowler’s end umpire and the striker’s end umpire.
5.5. Third umpire is the umpire who may use television evidence and other available technology in order review a decision of the on-field umpires, either by way of an Umpire Review or a Player Review under the protocol set out in Appendix D.
5.6. Umpires together agree applies to decisions which the umpires are to make jointly, independently of the players.
5.7. Decision Review System or DRS is the process covered by the Decision Review System and Third Umpire Protocol set out in Appendix D, under which the third umpire may be consulted in relation to a decision of the on-field umpires, either by way of an Umpire Review or a Player Review.
5.8. Player Review is the process set out in Appendix D by which a player may request a review of any decision taken by the on-field umpires concerning whether or not a batsman is dismissed (with the exception of ‘Timed out’).
5.9. Umpire Review is the process set out in Appendix D by which an on-field umpire has the discretion to refer a decision to the third umpire or, under certain circumstances, to consult with the third umpire before making a decision.
5.10. Soft Signal is the visual communication by the bowler’s end umpire to the third umpire (accompanied by additional information via two-way radio where necessary) of his/her initial on-field decision prior to initiating an Umpire Review.
5.11. Umpire’s Call is the concept within the DRS under which the on-field decision of the bowler’s end umpire shall stand, which shall apply under the specific circumstances set out in paragraphs 3.4.5 and 3.4.6 of Appendix D, where the ball-tracking technology indicates a marginal decision in respect of either the Impact Zone or the Wicket Zone.
5.12. The Pitching Zone as used in the DRS is a two dimensional area on the pitch between both sets of stumps with its boundaries consisting of the base of both sets of stumps and a line between the outside of the outer stumps at each end.
5.13. The Impact Zone as used in the DRS is a three dimensional space extending between both sets of stumps to an indefinite height vertically and with its boundaries consisting of the base of the stumps and the outside of the outer stumps at each end.
5.14. The Wicket Zone as used in the DRS is a two dimensional area with its boundaries consisting of the outside of the outer stumps, the base of the stumps, and the lower edge of the bails.
5.15. A Fair Catch is a catch that has been taken cleanly by the fielder in accordance with clause 33.
5.16. A Bump Ball is where the ball has made contact with the ground shortly after making contact with the striker’s bat.
5.17. The Elite Panel is the group of umpires contracted to the ICC to officiate in international cricket.
5.18. The International Panel is the group of umpires nominated by the ICC’s full members in accordance with clause 2.1.3 of the Playing Conditions.