were played without fans in attendance due to the COVID-19 pandemic. Porto won the first leg 2–1 at home and trailed the second leg by the same score after regulation. Both teams scored a goal in extra time and Porto went through, 2–1, on away goals. In the same 2020–21 season, the quarter-final between Bayern Munich and Paris Saint-Germain ended in a 3–3 draw on aggregate, but Paris Saint-Germain scored more away goals than Bayern Munich, 3–1, to qualify to the semi-finals. Summary Below is a summary of the variations of rules and examples of current competitions using the away goals rule for two legged-ties. In most examples in the table below, a penalty shoot-out is used to determine the winner if all criteria used remain tied. References Association football terminology Tie-breaking in group tournaments