G

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.

When a lower league or underdog team knocks out a much bigger club, usually in a cup competition, particularly synonymous with the FA Cup. The smaller team has nothing to lose, give absolutely everything for 90 minutes, and the favourites often look like they can't be bothered. Home advantage at a tight, hostile ground helps too.

The last line of defence and the only player allowed to use their hands in the box. Keepers need to stop shots, command the area, make quick decisions, and organize the defence. Modern keepers also have to be good with their feet to play out from the back and sweep up behind a high line. It's a lonely position - you get blamed for losses and rarely get credit for wins.