In 1999, Manchester City, now the richest team in England and the reigning Premier League champion, was playing a future-defining game at Wembley Stadium. As the match approached injury time, Man City was two goals down, but there were five additional minutes to be played. City scored in the 90th and 95th minutes to take the game to extra time and eventually a penalty shootout, which it won.
The game was against little Gillingham, and it was future-defining because it was a playoff game, and it got City out of the third tier of English football. Thirteen years later, and after massive investment, it became the best team in the country.