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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.

Deliberately stepping up as a defensive unit just before a pass to catch attackers offside. Risky because mistiming leaves attackers through on goal. Requires the whole back line to move together on the same cue. Some teams use it constantly; others avoid it because one mistake is catastrophic. VAR has made tight offside calls more reliable, which should help traps, but marginal decisions still create controversy.

A rare event. An Olimpico is a goal scored directly from a corner kick, without any other player touching the ball on its way into the net. The term ‘Olimpico’ originated from a goal that Argentinian player Cesareo Onzari scored direct from a corner kick in a match against Uruguay in 1924. Uruguay were the reigning Olympic Champions at the time.

A player who spends their whole career at one club. Rare now because the transfer market moves everyone around every few years. When it happens, the player becomes a club legend and symbol of loyalty. Jamie Carragher might have grown up an Everton fan but he came through Liverpool's youth ranks and played 737 times for the reds in a one club career.

A quick pass and return - you pass to a teammate, run past your marker, and receive the ball back. Also called a wall pass or give-and-go. Simple but effective for breaking through tight defenses. Requires two players on the same wavelength and a pass with enough pace that the defender can't recover. Basic attacking play that never goes out of fashion.