Each tie in the knockout phase, apart from the final, is played over two legs, with each team playing one leg at home. The team that scores more goals on aggregate over the two legs advances to the next round. If the aggregate score is level, the away goals rule is applied, i.e. the team that scores more goals away from home over the two legs advances. If away goals are also equal, then extra time is played. The away goals rule is again applied after extra time, i.e. if there are goals scored during extra time and the aggregate score is still level, the visiting team advances by virtue of more away goals scored. If no goals are scored during extra time, the winners are decided by a penalty shoot-out. In the final, which is played as a single match, if the score is level at the end of normal time, extra time is played, followed by a penalty shoot-out if the score is still level.
The mechanism of the draws for each round is as follows:
In the draw for the round of 16, the eight group winners are seeded, and the eight group runners-up are unseeded. The seeded teams are drawn against the unseeded teams, with the seeded teams hosting the second leg. Teams from the same group or the same association cannot be drawn against each other.
In the draws for the quarter-finals and semi-finals, there are no seedings, and teams from the same group or the same association can be drawn against each other. As the draws for the quarter-finals and semi-finals are held together before the quarter-finals are played, the identity of the quarter-final winners is not known at the time of the semi-final draw. A draw is also held to determine which semi-final winner is designated as the "home" team for the final.
For the quarter-finals and semi-finals, teams from the same city are not scheduled to play at home on the same day or on consecutive days, due to logistics and crowd control. To avoid such scheduling conflict, if the two teams are drawn to play at home for the same leg, the order of legs of the tie involving the team with the lower domestic ranking in the qualifying season is reversed from the original draw. On 17 June 2020, UEFA announced that due to the COVID-19 pandemic in Europe, the final stages of the competition would feature a format change. The quarter-finals, semi-finals and final would be played in a single-leg format from 12 to 23 August 2020 at the Estádio da Luz and Estádio José Alvalade in Lisbon, Portugal. The matches will tentatively be played behind closed doors, though spectators could be allowed subject to a review of the situation and the decisions of the national and local government. Following the competition restart in August 2020, a maximum of five substitutions will be allowed, with a sixth allowed in extra time. However, each team will only be given three opportunities to make substitutions, with a fourth opportunity in extra time, excluding substitutions made at half-time, before the start of extra time and at half-time in extra time. This follows a proposal from FIFA and approval by IFAB to lessen the impact of fixture congestion.
Schedule
The schedule is as follows. Following the first set of round of 16 second leg matches, the competition was postponed indefinitely due to the COVID-19 pandemic in Europe. The final, originally scheduled to take place on 30 May 2020, was officially postponed on 23 March 2020. A working group was set up by UEFA to decide the calendar of the remainder of the season.
Bracket
Round of 16
The draw for the round of 16 was held on 16 December 2019, 12:00 CET.
Summary
The first legs were played as scheduled on 18, 19, 25 and 26 February, as were the first set of second legs on 10 and 11 March 2020. Due to concerns over the COVID-19 pandemic in Europe, the second set of second leg matches were postponed by UEFA on 13 March 2020. On 17 June 2020, UEFA announced that the second legs would be played on 7–8 August 2020, with the venue to be decided between the home team's stadium and a neutral stadium in Portugal. However, on 9 July 2020, the UEFA announced that the remaining second legs will be held at the venues originally proposed. The first leg of the Atalanta v Valencia tie was retrospectively blamed by local civic and medical authorities for contributing to the extremely high concentration of coronavirus cases in Atalanta's home city ofBergamo. Several fans and players of Valencia also had positive diagnoses after returning from the game. The second leg of the Atlético Madrid v Liverpool tie was similarly blamed for the sharp increase in coronavirus-related deaths in North West England.
Matches
Paris Saint-Germain won 3–2 on aggregate. ---- ---- Atalanta won 8–4 on aggregate. ---- Atlético Madrid won 4–2 on aggregate. ---- ---- ---- RB Leipzig won 4–0 on aggregate. ----
Quarter-finals
The draw for the quarter-finals took place on 10 July 2020.
Summary
The matches will take place from 12 to 15 August 2020.
Matches
---- ---- ----
Semi-finals
The draw for the semi-finals took place on 10 July 2020.
Summary
The matches will be played on 18 and 19 August 2020.
Matches
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Final
The final is scheduled to be played at the Estádio da Luz in Lisbon. The "home" team was determined by an additional draw held after the quarter-final and semi-final draws.
