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Playing most of the game in the opponent's half, pinning them back regardless of possession. You can have lots of the ball but play it in your own half, which isn't territorial dominance. The best teams do both - high possession and playing it in dangerous areas. Field tilt stats track what percentage of the game is played in each third. Teams that dominate territory create more chances and concede fewer.

All the cynical stuff that wins games without playing well - diving, time-wasting, tactical fouls, faking injuries, crowding the ref, winding up opponents. Purists hate it, but it's everywhere and it works. Some players and managers treat it as a legitimate tool. Atlético Madrid under Simeone are experts at it.

British slang for the manager or head coach. The term comes from old English workplace hierarchy, where the "gaffer" was the foreman or boss. In football, it carries a bit of respect and affection - you're not just calling someone "the manager," you're acknowledging they run the show. Players and fans use it, pundits too. Sir Alex Ferguson was often called "the gaffer" at Manchester United.

Arsenal's 2003-04 squad that went the entire Premier League season unbeaten: 26 wins, 12 draws, 0 losses. The first team to do it in modern English football. Arsène Wenger built a side mixing French technique (Henry, Pires, Vieira) with English grit. The unbeaten run reached 49 games before Manchester United ended it in October 2004. It's hard to imagine anyone doing it again.

Where people go after a bad take or a loss. "He's in the mud" means someone's having a terrible time, either a player struggling or a fan whose predictions went wrong. "Clear of the mud" means things have improved. Football Twitter uses it constantly to celebrate rivals' misfortune or mock people who were confidently wrong.