Seeding in sports refers to a process whereby the best teams or individuals in a competition, tournament, or other knockout contest, are ranked based on some assessment of their merit. These rankings are then used to ensure that the best competitors cannot face each other until the later stages of the event.
That may feel a little bit unfair to some, with the top teams or players seemingly assured of an easy passage through to the business end of things. However, the main aim of the seeding process is to try and ensure that the biggest clashes occur when more is on the line. In fact, a counter argument would suggest that seeding is fairer than the alternative.
Of course, sport, like life, is not fair. The richest teams have advantages that others do not, while the same applies to individuals who have been blessed genetically, be that with height, strength, speed or skill. Nonetheless, many fans and players would accept that the “fairest” outcome in an event is for the best two teams or players to face each other in the final.
Seeding is a way of increasing the chances of this happening. As well as being unfair, life and sport are both unpredictable and upsets happen. When they occur, the top seeds are replaced by unfancied underdogs in the latter stages of competitions. This is fair, in that to get there they have beaten strong opponents and proved their worth.
In an event that was entirely unseeded, however, we could see lower-class exponents prosper because the best ones had eliminated each other. Unlikely though it would be, all the best 16 entrants could be drawn against one another in the very first round. Imagine the best side played the second, the third played the fourth and so on. After just one round, half of the top teams or players would be eliminated.
If that process was repeated in the second round, just four of the top 16 would remain in round three. What’s more, that would be two of the top eight and two of the entrants ranked ninth to 16. Without any sort of big upset, by just the third round, we could easily see just the second, fifth, 12th and 16th best competitors remain (for example).
What Sports Use Seedings?
Depending on exactly how we define seeding, almost all sports use some form of it. In the very broadest sense, even sports like horse racing and Formula 1 can be said to use “seeding”, albeit in a slightly different way to that described above. In horse racing, some races are only open to horses with a certain ranking or that have won “qualifying” events.
F1 can be said to seed drivers based on their performances in qualifying. We will look at how seeds are determined shortly but normally it is through some form of mid-to-long-term ranking. Formula 1 – and other motorsports – “seed” very directly, based on the short-term performance in qualifying, typically a one-off process held the day before the race.
Ultimately, though, such processes can be seen as seeding because they work to ensure that the cream has every chance of rising to the top. That said, seeding in its purest form, typically relates to sports that are decided by a tournament staged over multiple knockout rounds. Technically these are referred to as single-elimination events using a bracket format.
Seeding is probably most commonly associated with sports such as tennis and snooker, with darts, plus international tournaments in cricket, rugby and football also obvious ones. Many US sports, and even ones that have adopted their structures, such as rugby league, also use seedings in their play-offs.
How Are Seeds Decided?
The total number of seeds varies depending on the event, with four often the minimum and 32 the maximum, though there could be 64 or even more. Determining seeds often relies on world rankings, with the number one team or player automatically seeded one (assuming they take part). Obviously if a competitor is absent for whatever reason, their seeding spot goes to the next-highest ranked entrant. So, for example, the world number two would be number one seed, also called the top seed, if the world number one does not take part.
Some sports and competitions work a little differently though. We have mentioned F1 and horse racing above, but the Snooker World Championship is another interesting example. In this, the defending champion gains automatic entry into the tournament and, irrespective of world ranking, is the top seed.
Tennis is another sport that uses the world rankings list to determine seeds. As with all sports, the rankings on a fixed date are used, typically those at the time the draw is to be made. However, Wimbledon used to be a notable anomaly within tennis.
This was partly down to British eccentricity, perhaps, but also because playing on grass is – or certainly used to be – so different to competing on other surfaces. Between 2002 and 2019, the exact order of the top 32 players could be altered by the tournament authorities if they felt a player was particularly strong – or weak – on grass. Now, however, it uses the same rankings system as the other Slams (and events).
Different Sports
The nature of the seeding system varies a great deal between sports. Below we can see a brief look at the main sports that use seeds. Note that there are variations within each sport too, so this is a general overview rather than a detailed guide.
Snooker, Tennis and Darts
These sports are generally tournament-based (rather than a league or series), so are perfect for seedings. They normally operate using 16 or 32 seeds, typically determined according to world ranking at a specified cut-off point. The first and second seeds are put into separate halves of the draw, meaning that if things go according to rank, the top two players will meet in the final. Other seeds are spread throughout the draw with varying degrees of randomness. However, some tournaments in all these sports spread seeds in a very structured way throughout the bracket. This can be used to keep the top four seeds away from each other until the semis, or even top eight until the quarters.
Seeds in these sports, and indeed others, may also have the benefit of entering events at a later stage. This may be the second round, with some or all seeds getting a bye through the first, or might be the first, with non-seeds having to qualify first.
Football, Cricket and Rugby – Major Tournaments
Major tournaments, such as the various World Cups, have long used seeds to spread the major nations between various qualification groups. Some, including for the first time in 2026 the FIFA World Cup, have gone further, with the seed system keeping the top four apart until the semis – assuming they all topped their initial group.
We also see a variation of seeding in domestic cups, such as the FA Cup and EFL Cup in football. Here, sides higher up the football pyramid enter in a later round, although they are not then kept apart by any form of further seeding. The Champions League and other European competitions also use seeding to keep the best sides apart until the later stages.
US Sports
Seedings are used in different ways across the various predominantly US sports. However, they generally have one thing in common: strong performance in a league or group phase leads to an easier path through the post-season play-offs.
A similar system is used in UK rugby league and also in other sports where there are post-season play-offs, such as certain cricket competitions (and also promotion play-offs in football). Here, whoever finishes top in the initial phase is effectively the number one seed. They may progress directly to the final, the semi, or have some other advantage. In contrast, lower “seeds” may have to play two, three or even more games to win the competition.