Rules

Traditionally, hydration breaks are used during games when temperatures hit a certain threshold, typically 32°C or above. It’s a short break for players to take on liquids. For the 2026 World Cup, a new, mandated hydration break was brought in. There is one hydration break halfway through each half when the ball goes out of play, and they last for three minutes each. It’s a big talking point, a stealth way for more advertising to be shown during matches, frustrating viewers in the stadiums and at home.

A goal awarded despite the ball not crossing the line, or denied when it clearly did. Before goal-line technology, these caused huge controversies. Lampard's shot against Germany in 2010 clearly crossed the line but wasn't given; Luis Garcia for Liverpool against Chelsea in the Champions League semi-final in 2005; Geoff Hurst's 1966 World Cup final goal probably didn't cross but was given. Technology has mostly eliminated ghost goals, but the term lives on.

The official term for diving - going down without sufficient contact to make it look like a foul. Players simulate to win free kicks and penalties or get opponents booked. It's a bookable offense if the referee catches it, but enforcement is inconsistent. VAR can overturn penalties won through simulation. The line between "going down easily" and simulation is subjective.

Profit and Sustainability Rules. The Premier League's financial regulations that limit how much clubs can lose over a rolling three-year period - currently £105 million. Clubs that break the rules face points deductions, as Everton and Nottingham Forest found out in 2023-24. The rules are meant to stop clubs spending recklessly on transfers and wages, but critics point out they punish promoted clubs and favor established big six sides who generate more commercial revenue.

A player is sent off when given a red card, immediately removed from play. Given for serious fouls, violent conduct, spitting, stopping a clear goal with a foul or handball, or getting a second yellow card. Your team plays the rest of the match a man down and can't replace you. Usually comes with a ban for future games too. Going down to 10 men is a major disadvantage, though some teams have won despite it.

When VAR rules a player offside by millimetres, usually because their armpit or sleeve is beyond the last defender. The technology can draw lines to this precision, but it feels absurd to disallow goals for body parts you can't even score with. Fans mock it, but it's technically correct under the rules. Led to calls to give attackers the benefit of the doubt.

You're offside if you're closer to the opponent's goal than both the ball and the second-to-last defender when the ball is played forward. But you only get penalized if you're actually involved in the play. The rule has changed over the years, now focusing on whether you're interfering rather than just where you're standing. VAR has made calls tighter but also sparked endless debates about armpit offsides.

Leaving the ground with both feet to make a challenge. It's dangerous and usually a red card, regardless of whether you get the ball. The force and lack of control make serious injury likely. Some old-school players complain the game has gone soft, but there's no good reason to tackle with both feet up. It's reckless by definition.

Stands for "Denying an Obvious Goal-Scoring Opportunity." It's the official term referees use when a defender commits a foul that stops a clear chance on goal. If it happens inside the box, it's a penalty. The punishment used to be an automatic red card, but since 2016, if the foul is an honest attempt to play the ball inside the area, it's usually just a yellow. Outside the box? Still a straight red.

An initialism for Financial Fair Play. Introduced by UEFA as a way to prevent clubs spending beyond their means. The basic idea: you can't spend more than you earn, with some allowances for infrastructure and youth investment. Clubs that break the rules can face fines, transfer bans, or even exclusion from European competitions. Manchester City and PSG have both been investigated, though the punishments rarely seem to stick. UEFA replaced FFP with new "Financial Sustainability" rules in 2022, but people still call it FFP.