The knockout phase of the 2009–10 UEFA Champions League began on 16 February and concluded on 22 May 2010 with the final won by Internazionale against Bayern Munich 2–0 at the Santiago Bernabéu Stadium in Madrid. The knockout phase involved the sixteen teams who finished in the top two in each of their groups in the group stage. Times are CET/CEST, as listed by UEFA (local times are in parentheses).

Format

Each tie in the knockout phase, apart from the final, was played over two legs, with each team playing one leg at home. The team that had the higher aggregate score over the two legs progressed to the next round. In the event that aggregate scores finished level, the team that scored more goals away from home over the two legs progressed. If away goals were also equal, 30 minutes of extra time were played. If there were goals scored during extra time and the aggregate score was still level, the visiting team qualified by virtue of more away goals scored. If no goals were scored during extra time, the tie was settled via a penalty shoot-out. The draw mechanism for each round is as follows: In the final, the tie was played over just one leg at a neutral venue. If scores were level at the end of normal time in the final, extra time was played, followed by penalties if scores remained tied.

Qualified teams

Bracket

Round of 16

<section begin=R16 /> The draw for the competition's round of 16 was held on 18 December 2009. Starting from this season, the matches in the round of 16 were held over a month, instead of the previous two weeks. The first legs were played on 16, 17, 23 and 24 February, and the second legs were played on 9, 10, 16 and 17 March 2010. CSKA Moscow became the first Russian team to advance to the quarter-finals under the present format (16 teams in the knockout stage).

Matches

Barcelona won 5–1 on aggregate. Bordeaux won 3–1 on aggregate. Internazionale won 3–1 on aggregate. 4–4 on aggregate; Bayern Munich won on away goals. CSKA Moscow won 3–2 on aggregate. Lyon won 2–1 on aggregate. Arsenal won 6–2 on aggregate. Manchester United won 7–2 on aggregate.

Quarter-finals

<section begin=QF /> The draw for the quarter-finals took place on 19 March 2010. The first legs were played on 30 and 31 March, and the second legs were played on 6 and 7 April 2010.

Matches

Lyon won 3–2 on aggregate. 4–4 on aggregate; Bayern Munich won on away goals. Barcelona won 6–3 on aggregate. Internazionale won 2–0 on aggregate.

Semi-finals

<section begin=SF /> The draw for the semi-finals took place on 19 March 2010, immediately after the draw for the quarter-finals. The first legs were played on 20 and 21 April, and the second legs were played on 27 and 28 April 2010. There were fears that the first legs would have to be postponed due to the [eruptions](https://bliptext.com/articles/2010-eruptions-of-eyjafjallaj-kull) of the volcano at [Eyjafjallajökull](https://bliptext.com/articles/eyjafjallaj-kull) in [Iceland](https://bliptext.com/articles/iceland). On 18 April, UEFA issued a statement that the matches would go ahead and that the teams would have to make alternate travel arrangements.

Matches

Bayern Munich won 4–0 on aggregate. Internazionale won 3–2 on aggregate.

Final

<section begin=F /> The final was played on 22 May 2010 at the [Santiago Bernabéu](https://bliptext.com/articles/santiago-bernab-u-stadium) in [Madrid](https://bliptext.com/articles/madrid), Spain. A draw was held on 19 March 2010, after the quarter-final and semi-final draws, to determine the "home" team for administrative purposes. It was contested by Germany's [Bayern Munich](https://bliptext.com/articles/fc-bayern-munich) and Italy's [Inter Milan](https://bliptext.com/articles/inter-milan). The stadium, home of [Real Madrid](https://bliptext.com/articles/real-madrid-cf), had hosted three previous European Cup finals, in [1957](https://bliptext.com/articles/1957-european-cup-final), [1969](https://bliptext.com/articles/1969-european-cup-final) and [1980](https://bliptext.com/articles/1980-european-cup-final). It was the first time that a UEFA Champions League final was played on a Saturday night. England's [Howard Webb](https://bliptext.com/articles/howard-webb) was appointed to referee the final. The two clubs competing in the Final had each won their domestic league and cup competitions, meaning that the winner would become only the sixth club in Europe to have achieved a [continental treble](https://bliptext.com/articles/treble-association-football), and the first such club from their respective countries. It was also the second consecutive treble, following that of Barcelona in the previous season. <section end=F />