You've been watching for three days and someone just screamed 'offside' at the TV. You nodded. You have no idea why. Here's your catch-up guide — no condescension, just the rules that actually matter.
The stuff people argue about most
Offside — and yes, it's offside, not offsides — trips up new watchers every tournament. The rule: a player is offside if they're closer to the opponent's goal line than both the ball and the second-to-last defender at the moment a teammate plays the pass. The goalkeeper is usually the last defender, so it's really about the last outfield player. You can't be offside in your own half. Everything else is detail.
Why doesn't the clock stop? It doesn't, ever. Injuries, goals, time-wasting — none of it pauses the clock. Instead, the referee tracks lost time and adds it at the end of each half as stoppage time. This World Cup adds a wrinkle: mandatory three-minute hydration breaks mid-half, built in for the North American summer heat. Those three minutes get added on top of regular stoppage time, so expect a minimum of five extra minutes per half. If you're tracking clean sheet odds, that's a lot of football left to play when it feels like it's nearly over.
Free kick vs. penalty kick. Both follow fouls. The difference is geography. Foul inside the penalty area — that big rectangle near goal — and it's a penalty: one player, the goalkeeper, 12 yards out, central. Foul outside that area and it's a free kick, taken from the spot of the offense, with the defending team allowed to set up a wall. A penalty is close to a guaranteed chance. A free kick, much less so.
New rules worth knowing this tournament
The tiebreaker system in the group stage has changed. Previously, overall goal difference separated level teams. Now, head-to-head results come first. Then head-to-head goal difference. Then goals scored in those head-to-head games. Overall goal difference only kicks in as a fourth tiebreaker. It makes the early group games matter more, and it changes how teams might approach a dead rubber.
The five-second throw-in rule is also new. If a referee decides a player is stalling on a throw-in, they start a visible five-second countdown. Hit five seconds and the throw goes to the other team. Bosnia-Herzegovina's Sead Kolašinac already lost possession this way against Canada. It's a small rule. It will feel significant in a tight game.
One off-pitch detail worth noticing: logos on condiment bottles inside stadiums are being taped over. FIFA's sponsorship contracts give official partners exclusive brand visibility at venues. Non-partner brands get covered up. Stadiums with commercial naming rights — like Gillette Stadium near Boston — have been given generic names for the duration of the tournament. Same principle.
- Offside: closer to goal than ball and second-to-last defender when the pass is played
- Stoppage time: accumulated lost time added at end of each half, minimum five minutes this tournament
- Penalty vs. free kick: inside the box = penalty; outside = free kick
- Group tiebreaker order: head-to-head result → head-to-head goal difference → goals scored head-to-head → overall goal difference
- Throw-in countdown: five seconds or you lose possession
That covers the rules most likely to matter in the next match you watch. The duck in the jersey is on your own.
