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Winning the ball and attacking immediately while the opposition is still out of position. Speed matters, and so does finishing the chance before they recover. It works well against teams who dominate possession and push lots of players forward. Some teams, like Leicester in 2015-16, build their whole approach around it. Others do it out of necessity when they're outmatched.

A one-on-one contest for the ball between two players. Duels get split into aerial duels (headers) and ground duels (tackles, physical challenges). Duel success rate is a key metric for defenders and midfielders - it shows how often they win individual battles. Some leagues track them obsessively, and certain players like Casemiro and Van Dijk dominate these numbers.

Contacting a player under contract without their club's permission, trying to convince them to push for a move. Against FIFA rules and can result in bans, but everyone assumes it happens constantly because it's hard to prove. Usually goes through agents rather than directly. Clubs accuse each other of tapping up whenever a player starts agitating to leave.

A winger on the opposite flank to their dominant foot - right-footer on the left, left-footer on the right. When they cut inside, they're on their stronger foot to shoot or pass across goal. Similar to an inside forward but might still provide width and use trivela crosses. Became standard once managers realized wingers could score as well as create.

Push the ball one way with the outside of your foot, then snap it back the other way with the inside of the same foot, all in one motion. Also called the flip-flap or snake. Creates the illusion of going one direction before exploding the other way. Ronaldinho made it famous, though Rivellino and Sérgio Echigo were doing it earlier. At speed, it's almost impossible to defend.