How does a challenge work in wrestling?

• The coach asks by pressing a button, or with a sponge supplied by the organiser, straight after the call or the missed call. The limit is 10 seconds from the points appearing on the scoreboard or the wrestlers returning to a neutral position.
• The wrestler can reject the coach's challenge, and the bout goes on.
• The bout is stopped for the review once the wrestlers are back in a neutral position.
• The refereeing delegate and the mat chairman watch the video. The delegate alone gives the decision. It is final, and there is no counter-challenge.
• Not open to challenge: passivity calls and a fall. A challenge is accepted for an illegal action that led to the fall.
• Every kind of caution can be challenged.
• No challenge once the winner has been declared.
• If a technical fault prevents the review, the original decision stands and the challenge is kept.
• A challenge must be reasoned. One made as a plain protest earns the coach a yellow card.
• Challenges exist only at competitions with official video control.

Scoring happens fast and three officials can miss it. The 1-point cost keeps a coach from using the review to rest the wrestler or break the opponent's rhythm.