Three rule changes from IFAB (the International Football Association Board), the body that sets the laws of the game, are live across all 104 World Cup matches from the 11 June opener at Los Angeles Stadium 1. A player covering the mouth during a confrontation now draws a red card; VAR (Video Assistant Referee) can review second yellow cards; and a mandatory hydration break falls near the 22nd minute of each half.
The VAR change targets a specific gap. Second bookings that send a player off had previously sat outside VAR's remit, so a marginal second yellow could not be corrected once given. Extending review to those decisions answers incidents in previous tournaments where contested dismissals stood unchecked. The hydration break is a welfare measure for summer matches in US and Mexican heat, not an officiating change.
