The UEFA Champions League is Europe's leading men's club competition, but its current format is very different from the traditional group-stage system many football fans grew up watching.
There are now 36 clubs in one league phase. Each club plays eight different opponents rather than facing three teams twice in a four-team group. Where a team finishes in the overall standings then determines whether it goes directly to the round of 16, enters the knockout phase play-offs, or leaves the competition.
In this guide, I will explain the Champions League from qualification to the final, including how teams enter, how the league phase works, how the draw determines opponents, and what happens once the knockout rounds begin.
What Is the UEFA Champions League?
The UEFA Champions League is an annual European club competition organised by UEFA. Its history goes back to the European Champion Clubs' Cup, commonly called the European Cup, which began in the 1955/56 season.
The competition was relaunched as the UEFA Champions League in 1992/93. Although the original competition was built around domestic league champions, today's Champions League includes champions and other high-finishing clubs from European domestic leagues.
The competition runs through qualification, a league phase, and a knockout phase before two clubs meet in the final.
Who Can Qualify for the Champions League?
Clubs qualify primarily through their domestic leagues, but the exact route depends on the UEFA ranking and access position of their national association. That is why clubs from different countries do not all enter the competition at the same stage.
Some clubs qualify directly for the league phase. Others must progress through one or more qualifying rounds. The Champions League and Europa League titleholders also have guaranteed league-phase places if they have not already qualified through their domestic leagues.
Two European Performance Spots also exist. These give an additional league-phase place to each of the two national associations whose clubs collectively performed best across UEFA's men's club competitions during the previous season.
This means Champions League qualification is not simply a case of saying every country sends its league champion. Domestic finishing position, association ranking, titleholder places, European Performance Spots, and the qualifying rounds can all affect the final list of participants. I cover those routes separately in the How Do Teams Qualify for the UEFA Champions League article.
How Does Champions League Qualification Work?
Before the league phase begins, UEFA holds a qualifying competition for clubs that have not received direct entry. The qualifying phase contains two routes:
Champions Path: This is mainly for domestic league champions that have not qualified directly for the league phase.
League Path: This is for qualifying clubs that enter through their domestic league position without being national champions.
The two paths are important because a domestic champion is not simply placed into the same qualifying pool as every non-champion.
The qualifying competition includes several rounds before the play-offs. Clubs play home-and-away knockout ties, and the aggregate winner progresses. The exact round at which a club enters depends on UEFA's access system.
I explain the distinction in more detail in this article, Champions Path vs League Path: What's the Difference? and How Do the Champions League Qualifying Rounds Work?
How Many Teams Are in the Champions League League Phase?
The league phase contains 36 clubs. This replaced the previous 32-team group stage beginning with the 2024/25 season. However, having 36 teams in one league does not mean every club plays the other 35 teams.
Each club plays only eight league-phase matches against eight different opponents:
four at home
four away
All 36 clubs are then ranked together in one standings table. That is one of the most important things to understand about the modern Champions League. There are no separate Groups A, B, C, or D. Every league-phase club belongs to the same overall standings.
How Does the Champions League League Phase Draw Work?
Before the league phase, UEFA divides the 36 clubs into four pots of nine teams. The pots are mainly determined by UEFA club coefficients, with the Champions League titleholder placed as the top seed in Pot 1.
Each club is then assigned:
two opponents from Pot 1
two from Pot 2
two from Pot 3
two from Pot 4
For each pot, one opponent is played at home and the other away. This creates eight different opponents. One detail I think is especially important is that being in Pot 1 does not mean a team avoids the other Pot 1 clubs.
A Pot 1 club still plays two Pot 1 opponents. That is a major difference from the old group-stage system, where the pots were used to place one team from each pot into a group.
In principle, clubs from the same national association cannot face each other during the league-phase draw, and a club can face no more than two opponents from any one other association. I explain the complete process in How Does the Champions League Draw Work?
How Does the Champions League League Phase Work?
Each club plays eight matches and receives the standard football points:
three points for a win
one point for a draw
zero points for a defeat
After all eight matchdays, the 36 teams are ranked in one table. The final positions determine what happens next.
Positions 1–8: Direct qualification
The top eight clubs qualify directly for the round of 16. They do not have to play in the knockout phase play-offs. This makes eighth place one of the most important positions in the league table.
Positions 9–24: Knockout phase play-offs
The clubs finishing from ninth to 24th enter a two-legged knockout phase play-off. Sixteen teams therefore compete for the remaining eight places in the round of 16.
Positions 25–36: Eliminated
The bottom 12 clubs are eliminated from European competition. They do not drop into the Europa League. That is worth highlighting because under older UEFA formats, Champions League elimination at certain stages could lead to a place in the Europa League.
Once a club finishes 25th or lower in the current league phase, its European campaign is over. For a deeper explanation, see How Does the Champions League League Phase Work?
What Happens If Teams Finish Level on Points?
With 36 clubs sharing one standings table, teams can naturally finish level on points. UEFA therefore uses a sequence of tiebreakers to separate them. Goal difference and goals scored are among the first criteria, followed by further results-based and opponent-related criteria if teams remain level.
These rules can become particularly important on the final league-phase matchday because one place can be the difference between:
direct qualification and a play-off
entering the play-offs and elimination
receiving a more favourable knockout position
Rather than listing every tiebreaker here, I explain them in the Champions League Tiebreaker Rules Explained article.
What Is the Champions League Knockout Phase Play-Off?
The knockout phase play-off is an extra round involving teams that finish between ninth and 24th in the league phase. The 16 clubs are divided according to their league-phase positions when the play-off draw is structured.
Higher-ranked teams receive seeding advantages, and the ties are played over two legs. Eight clubs are eliminated. The other eight advance to the round of 16, where they join the eight clubs that qualified directly from the league phase.
This is why the difference between finishing eighth and ninth matters so much. A club in eighth goes directly into the last 16. A club in ninth must survive another two matches before getting there. I explain the round fully in What Is the Champions League Knockout Phase Play-Off?
How Does the Champions League Knockout Stage Work?
Once the play-offs are complete, 16 teams remain. The knockout phase then continues through:
Round of 16
Quarter-finals
Semi-finals
Final
The knockout play-offs, round of 16, quarter-finals and semi-finals are normally played over two legs, with each club playing once at home and once away. The team with the higher aggregate score progresses.
If the aggregate score is level after the second leg, the match goes to two 15-minute periods of extra time. If the teams still cannot be separated, the tie is decided by a penalty shoot-out. There is no away-goals advantage for deciding a level tie.
Why Does League-Phase Position Matter in the Knockout Stage?
League position does more than decide whether a club qualifies. It also helps determine the knockout bracket. Teams are placed into paired positions according to where they finished in the league phase.
Higher finishes can provide seeding and home-leg advantages in later stages of the bracket. This means the league phase is not simply about reaching the top 24. Finishing as high as possible can affect a club's route through the knockout rounds.
For example, finishing seventh or eighth is different from finishing first or second even though all eight clubs qualify directly for the round of 16. I go deeper into those pairings in How Does the Champions League Knockout Draw Work?
How Does the Champions League Final Work?
The Champions League final is different from the previous knockout rounds because it is a single match rather than a two-legged tie. It is played at a predetermined neutral stadium.
If the score is level after 90 minutes, the teams play two 15-minute periods of extra time. If the score remains level, a penalty shoot-out decides the champion. For the 2026/27 season, the final is scheduled for 5 June 2027 at the Estadio Metropolitano in Madrid.
What Does the Champions League Winner Get?
Most importantly, the winner becomes European club champion and receives the UEFA Champions League trophy. The champion also receives a place in the following season's Champions League league phase if it has not already qualified through its domestic competition.
The Champions League winner also faces the Europa League winner in the UEFA Super Cup. There are financial rewards throughout the competition as well, but a club's total Champions League earnings are more complicated than one fixed winner's prize because UEFA distributions include several components.
How Is the Current Format Different From the Old Group Stage?
This is one of the easiest areas to misunderstand. Under the previous Champions League format, 32 teams were divided into eight groups of four. Each team played the other three clubs in its group home and away for six matches.
The current system instead has:
36 league-phase clubs
one overall standings table
eight different opponents per club
eight matches per club
four home and four away matches
direct round-of-16 places for the top eight
knockout play-offs for positions nine to 24
The change also means the seeding pots work differently. A Pot 1 club can now face Pot 1 opponents because every team must play two clubs from each pot. I explain these differences separately in Champions League League Phase vs the Old Group Stage.
Common Champions League Misunderstandings
A few points are worth clearing up because they can confuse. There are 36 teams, but teams do not all play each other. Each club plays only eight league-phase opponents.
Pot 1 teams can face other Pot 1 teams. The pots determine the mix of eight opponents rather than creating four-team groups. Finishing ninth is not direct qualification for the round of 16. Ninth through 24th must enter the knockout play-offs.
Finishing 25th does not send a club to the Europa League. Positions 25–36 are eliminated from Europe. The league phase does not completely reset before the knockout rounds. Final league position influences knockout placement and seeding. Understanding those five points makes the modern format much easier to follow.
Champions League Format at a Glance
The simplest way I remember the competition is:
Qualification → League Phase → Knockout Play-Offs → Round of 16 → Quarter-finals → Semi-finals → Final
The league phase has 36 clubs.
Each plays eight different opponents.
The top eight advance directly to the last 16.
Teams ranked nine to 24 enter the knockout play-offs.
Teams ranked 25 to 36 are eliminated.
Eight play-off winners join the top eight in the round of 16, and the competition then continues through the knockout bracket until two teams reach the final.
Final Thoughts
The current Champions League looks complicated at first because it combines one 36-team table with a draw that gives every club a different set of eight opponents. The easiest way to understand it is to separate the competition into stages.
First, clubs qualify through domestic performance, titleholder places, or qualifying rounds. Then 36 teams enter the league phase. The top eight earn direct entry to the round of 16, positions nine to 24 fight for the remaining eight places, and the bottom 12 are eliminated.
From there, the competition becomes a knockout tournament leading to a one-match final. What makes the league phase particularly important is that every position can have consequences. Clubs are not only trying to survive; they are trying to finish as high as possible because league position can determine whether they avoid the play-offs and can influence their route through the knockout bracket.
That is why understanding the format makes watching the Champions League much easier. Instead of seeing 36 teams and a long table of results, I can see what every club is actually playing for at each stage of the competition.