1. A team scores a goal it doesn't deserve.
2. A team scores a goal in the literal last minute of the game.
3. A team scores a goal and has it disqualified for absolutely no reason.
Can also be used to describe achievements outside of soccer. Based on the USA team's 2010 World Cup performance.
Ghana could not score the American goal with a penalty kick during overtime, and lost the match to Uruguay in the penalty shoot out.
Bill: That new supervisor is an idiot. How'd he get this job?
Ted: He's the boss's son.
Bill: Way to score an American goal.