Editing Umpire (cricket) (section)

====Decision Review System====
{{main article|Umpire Decision Review System}}
If the umpire is unsure of a "line decision" (that is, a run out or stumped decision) or if the umpire is unsure whether the ball is a four, a six, or neither, they may refer the matter to the Third Umpire. The umpires may additionally refer decisions to the Third Umpire regarding Bump Balls and catches being taken cleanly (but only after the on-field umpires have consulted and both were unsighted). Additionally the players may decide to refer a [[Dismissal (cricket)|dismissal]] decision to the Third Umpire. The on-field umpire signals a referral using both hands to mime a TV screen by making a box shape.<ref>{{Cite news|url=http://news.bbc.co.uk/sportacademy/hi/sa/cricket/rules/umpire_signals/newsid_3809000/3809891.stm|title=TV replay|date=2004-06-29|access-date=2018-06-02|language=en-GB}}</ref>

If the Third Umpire decides that the on-field umpire made an incorrect decision then they will inform the on-field umpire, via headsets, of what they have seen and tell them to either change their decision or to stay with their original decision. The on-field umpire may then have to signal the 'revoke last signal' sign (below).

The Third Umpire is not used except in international or important domestic matches.