This week, the UEFA Champions League quarter-finals take place in rather exceptional circumstances.
The eight teams to reach this stage will travel to Lisbon, where they'll play out the rest of the tournament in a single-game knockout, World Cup-style format—a departure from the usual two-legged, home and away structure because of the impact of the coronavirus.
So if this stage of the competition was an exciting, unpredictable rollercoaster before, things have been ramped up thanks to a new, more intense, somewhat unknown setting.
This acts as your preview for each quarter-final game, where we dissect the four fixtures, pick out how and why they'll be decided and offer a prediction for each one.