Summary
Under the format UEFA introduced for the 2024/25 season, only the eight best-placed clubs from the 36-team league phase walk straight into the round of 16, while sixteen more must survive a two-legged play-off just to reach the same point....
Table of contents
- 1 How the knockout stage fits the new format
- 2 The knockout phase play-offs explained
- 3 Round of 16, quarter-finals and semi-finals
- 4 How the knockout bracket and draw work
- 5 Two-leg rules: away goals, extra time and penalties
- 6 Old knockout format versus the new one
- 7 The final: one match, neutral ground
- 8 Frequently asked questions
- 8.1 How many teams reach the Champions League knockout stage?
- 8.2 What are the knockout phase play-offs?
- 8.3 Does the Champions League still use the away-goals rule?
- 8.4 What happens if a two-legged tie is level after both matches?
- 8.5 Is the Champions League final one match or two legs?
- 8.6 How is the knockout bracket decided?
- 8.7 When are the knockout rounds played?
- 9 Sources
Under the format UEFA introduced for the 2024/25 season, only the eight best-placed clubs from the 36-team league phase walk straight into the round of 16, while sixteen more must survive a two-legged play-off just to reach the same point. That single change reshaped how the Champions League knockout stage matches are seeded, drawn and played. If you grew up with eight tidy groups and a clean round-of-16 draw, the current bracket looks unfamiliar, so this article breaks down exactly who qualifies, how the draw is constructed, and which two-leg rules decide who advances.
How the knockout stage fits the new format
The knockout stage is the second half of the competition. Before any bracket exists, all 36 clubs play eight matches in a single league table, a structure that replaced the old eight groups of four. Where teams finish in that table decides everything that follows. According to UEFA, the clubs ranked 1st to 8th advance automatically to the round of 16, the clubs ranked 9th to 24th drop into the knockout phase play-offs, and the bottom twelve are out of European competition for the rest of the season.
That last point is a sharp break from the past. In the old group stage, a third-place finisher parachuted into the Europa League. The current design offers no safety net: finish 25th or lower and your continental campaign simply ends. For a fuller picture of how the table itself is built, our explainer on the league phase versus the group stage walks through the scheduling and seeding behind those eight matches.
The knockout phase play-offs explained
The knockout phase play-offs are the new gateway round. Sixteen clubs enter them: the eight ranked 9th to 16th in the league phase are seeded, and the eight ranked 17th to 24th are unseeded. Each tie pairs one seeded club with one unseeded club over two legs, and the lower-ranked, unseeded side hosts the first leg while the seeded side finishes the tie at home. The eight winners join the eight automatic qualifiers to complete a sixteen-team round of 16.
This round is the reason a strong league-phase finish matters so much. A club that ends 7th avoids an extra two-legged tie entirely and gets a longer rest, while a club that scrapes in at 23rd faces a knockout match in February before the round of 16 has even begun. If you want to see how those calendar slots line up, the Champions League match schedule lists the dates and kickoff windows for each stage.
Round of 16, quarter-finals and semi-finals
From the round of 16 onward, the structure looks more traditional. Sixteen clubs become eight, then four, then two, and every one of those rounds is decided over two legs, home and away. The round of 16 typically falls in March, the quarter-finals in April, and the semi-finals across late April and early May, mirroring the rhythm long-time viewers will recognise. Our overview of how the Champions League works covers the wider match format if you want the rules behind each fixture.
What changed is not the number of legs but the path. Because the bracket is fixed once the league phase ends, a round-of-16 win sends a club along a predetermined route toward the final, so the potential quarter-final and semi-final opponents are known in advance rather than redrawn each round.
How the knockout bracket and draw work
The draw is where the new system feels most different. Rather than an open draw before every round, UEFA fixes a single bracket once the league phase concludes. The eight automatic qualifiers are seeded by their final ranking, and that ranking maps each of them to a specific bracket position. The play-off winners then slot into predetermined spots, so the team that finished 1st knows which play-off it will meet, and which side of the draw could produce its semi-final.
The first and second-ranked clubs are kept in opposite halves, which means they can only meet in the final. This rewards a high finish with a theoretically smoother route and reduces the random reshuffling that used to define each knockout draw.
Once the league phase ends, the bracket is locked, so a club can trace its entire possible route to the final before a single knockout ball is kicked.
| Round | Teams entering | Format | Typical month |
|---|---|---|---|
| Knockout play-offs | 16 (ranks 9–24) | Two legs | February |
| Round of 16 | 16 (8 seeds + 8 play-off winners) | Two legs | March |
| Quarter-finals | 8 | Two legs | April |
| Semi-finals | 4 | Two legs | April–May |
| Final | 2 | Single match | May |
Two-leg rules: away goals, extra time and penalties
Every knockout tie before the final is settled on aggregate, the combined score across both legs. The away-goals rule, which once broke ties in favour of the side that scored more on the road, was scrapped by UEFA from the 2021/22 season, so goals carry equal weight wherever they are scored. If the aggregate is level after 180 minutes, the second leg goes to 30 minutes of extra time, and a penalty shootout follows only if the teams are still inseparable.
One practical effect: a 2-1 home defeat in the first leg is no longer the disaster it once seemed, because that single away goal for the visitors no longer counts double. Tactics in second legs have shifted accordingly, with managers chasing the aggregate rather than guarding an away-goals advantage.
Old knockout format versus the new one
Seeing the two systems side by side makes the scale of the change clear. The table below compares the knockout setup that ran through 2023/24 with the one in force today.
| Aspect | Old (through 2023/24) | New (from 2024/25) |
|---|---|---|
| Clubs in competition | 32 | 36 |
| First knockout round | Round of 16 | Knockout play-offs, then round of 16 |
| Path to round of 16 | Top 2 of eight groups | Top 8 direct; 9–24 via play-off |
| Away-goals rule | Removed in 2021/22 | Not used |
| Bracket draws | Open draw each round | Seeded bracket fixed after league phase |
| Third-place fallback | Dropped to Europa League | Ranks 25–36 eliminated |
The biggest shift is not more teams but fewer second chances: finish below 24th and there is no European parachute at all.
The final: one match, neutral ground
The knockout road ends with a single match at a pre-selected neutral venue. The 2025 final, played at the Allianz Arena in Munich on 31 May 2025, saw Paris Saint-Germain beat Inter Milan 5-0 for the club’s first Champions League title, a result reported by Reuters and BBC Sport. The 2026 final is scheduled for the Puskás Aréna in Budapest. Because the final is a one-off, extra time and penalties decide it on the night if the 90 minutes end level. For viewers in the United States planning around these dates, our guide to watching Champions League matches covers broadcast and streaming options.
Frequently asked questions
How many teams reach the Champions League knockout stage?
Twenty-four of the 36 clubs that start the league phase reach the knockout stage in some form. The eight highest-ranked clubs qualify directly for the round of 16, and the sixteen clubs ranked 9th to 24th enter the knockout phase play-offs. Eight of those play-off sides win through, joining the top eight to fill the round of 16. The remaining twelve clubs, ranked 25th to 36th, are eliminated and do not transfer to the Europa League, which is a clear departure from the old group-stage system.
What are the knockout phase play-offs?
The knockout phase play-offs are a preliminary knockout round added in 2024/25. They involve the sixteen clubs that finished between 9th and 24th in the league phase. Clubs ranked 9th to 16th are seeded and clubs ranked 17th to 24th are unseeded, with each tie pairing a seeded and an unseeded side over two legs. The seeded club plays the decisive second leg at home. The eight winners advance to the round of 16, while the eight losers are knocked out of Europe entirely for that season.
Does the Champions League still use the away-goals rule?
No. UEFA abolished the away-goals rule from the 2021/22 season, and it is not used in any knockout round today. Previously, if a two-legged tie finished level on aggregate, the team that had scored more goals away from home advanced. Now goals count equally regardless of venue. When a tie is level after both legs, the second leg moves to 30 minutes of extra time, and if the score is still level on aggregate after that, the tie is decided by a penalty shootout. The change has reshaped how managers approach away legs.
What happens if a two-legged tie is level after both matches?
If the aggregate score is tied after the two legs have finished, the second leg continues into extra time of two fifteen-minute halves. Any goals scored in extra time are added to the aggregate. Should the teams remain level after extra time, the tie is settled by a penalty shootout at the end of the second leg. Because away goals no longer break ties, there is no shortcut: the only ways to win are to lead on aggregate after 120 minutes or to prevail on penalties. This applies to every two-legged knockout round.
Is the Champions League final one match or two legs?
The final is a single match held at a neutral venue chosen by UEFA years in advance. Unlike every other knockout round, there is no second leg. If the two teams are level after 90 minutes, the match goes to 30 minutes of extra time, and a penalty shootout follows if the score is still tied. The 2025 final took place in Munich, where Paris Saint-Germain beat Inter Milan 5-0, and the 2026 final is set for the Puskás Aréna in Budapest. Hosting the final brings significant attention and revenue to the chosen city.
How is the knockout bracket decided?
The bracket is fixed once the league phase ends, rather than being redrawn before each round. Final league-phase rankings seed the eight automatic qualifiers into set bracket positions, and the play-off ties are mapped to predetermined slots. As a result, a club can trace its entire potential route to the final after the league phase, including which round-of-16 opponent and which possible quarter-final and semi-final lie ahead. The top two ranked clubs are placed in opposite halves so they can meet only in the final, which rewards a strong league-phase performance.
When are the knockout rounds played?
The knockout calendar runs across the second half of the season. The knockout phase play-offs are staged in February, after the league phase finishes in late January. The round of 16 follows in March, the quarter-finals in April, and the semi-finals across late April and early May. The final is held in late May or early June. Exact dates shift slightly each year, and you can confirm specific kickoff windows for the current campaign through the official UEFA calendar or our schedule overview, which tracks the published fixture dates.
Sources
- UEFA, official Champions League site – https://www.uefa.com/uefachampionsleague/
- Wikipedia, UEFA Champions League – https://en.wikipedia.org/wiki/UEFA_Champions_League
- Wikipedia, 2024–25 UEFA Champions League knockout phase – https://en.wikipedia.org/wiki/2024%E2%80%9325_UEFA_Champions_League_knockout_phase
- Reuters, soccer coverage – https://www.reuters.com/sports/soccer/
- BBC Sport, football – https://www.bbc.com/sport/football
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