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ITF World Tennis Number (WTN)

9 MINUTE READ

Making it easier than ever to organise enjoyable tennis matches in Britain - this is the ITF World Tennis Number.

The ITF World Tennis Number is a new rating system for all tennis players across the world which will make it easier for everyone who plays tennis in Britain to organise and play against opponents of a similar standard.

Whether you’re playing at Wimbledon (we can dream), or just meeting a friend to play matches at your local court (much more likely), everyone’s welcome – and everyone will have their own World Tennis Number.   

Intrigued and want to find out more?

In short, the ITF World Tennis Number has…

  • A world-wide rating system that ranges from 40 (recreational players) to 1 (pro players) - players with an ATP/WTA ranking will be listed as PRO
  • Separate ratings for singles and doubles players
  • An algorithm that produces your own rating
  • An algorithm that counts sets, and matches, played which means the more you compete, the more accurate your rating will be
  • A personalised digital ‘Game zONe’ feature, which will help you identify opponents with a similar rating online

Acceptance & Seeding Criteria - 1 April 2022

Following the successful launch of the ITF World Tennis Number in October 2021, ITF World Tennis Number has replaced LTA Rating for acceptance and seeding for all relevant tournaments from 1 April 2022.

Acceptance

Seeding

Algorithm Update - 30 March 2022

The ITF has been working with National Associations including LTA to further enhance the calculation of the ITF World Tennis Number. The update to the algorithm will take place in the weekly update on 30th March 2022 and may affect any player with an existing ITF World Tennis Number. Most players will see a very small change (no more than 1 or 2 WTNs) but a very small proportion of players may see a more significant change. The new advanced calculation will ensure players are assigned an initial number that will make the system more accurate and consistent for all players.

The ITF World Tennis Number will make it easier to play matches

We are trying to make it as simple as possible for tennis players in Britain to organise and play more matches as we know how hard it can sometimes be to find someone of a similar level to play against.

That’s why we’re adopting the ITF World Tennis Number – to make life easier for tennis players like you.

You can get an ITF World Tennis Number for free

Getting your World Tennis Number couldn't be easier:

  1. If you’re an Advantage member in the Play, Play+ or Compete categories, who wants to play or compete at any level, you’ll be able to get your own ITF World Tennis Number for free. If you are not currently a member, sign up to become an Advantage member today.
  2. Visit your My Game Dashboard, select the Activate Your WTN button to complete 5 simple questions. 
  3. Your ITF World Tennis Number will be allocated in 5-10 minutes.

How will this affect my LTA Rating?

Your ITF World Tennis Number will have no connection to your current LTA rating – it will be a completely new rating calculated specifically for you using match results since 2016.

The system is slightly different for juniors. New players will initially be given a number, like in the current system, but unlike the LTA Rating system, once the player has recorded some match results the system will quickly give them a more accurate Number.

ITF World Tennis Number Principles

The ITF World Tennis Number is made up of eight key principles.

These principles provide guidance to players on how their Number may change and what may affect it - find out more below.

Examples of the ITF World Tennis Number in use

Please find below 3 examples of the ITF World Tennis Number in use. 

Examples of the ITF World Tennis Number in use

Please find below 3 examples of the ITF World Tennis Number in use.

It is possible that two players with a similar LTA Rating will have a different ITF World

Same LTA rating but different competition experience

Tennis Number as this will be based on up match data from 2016 onwards, calculated at set level.

For example we may have two players with an LTA rating of 6.2 but varying competition experiences.

Player 1 may have competed a lot as a younger player, managing to regularly move his rating up while still losing a lot of a matches.

Whereas Player 2 may not have competed as frequently, due to being talented in a number of sports, but always did very well in the competitions that they did enter and always easily beat Player 1.

Assigning points through the WTN algorithm

Your World Tennis Number will be calculated at Set Level meaning if a player were to win a match 2 sets to 1, they would be rewarded with 2 set wins and 1 set loss whereas their opponent would be awarded with 2 set losses and 1 set win.

When players compete the algorithm will analyse the pre-match data of both players to predict the outcome of the match and compare this prediction to the actual match result in order to change a players number.

ITF World Tennis Number is here to inspire and support everyone’s tennis goals, whatever they might be. If your aim is to improve your game and therefore your Number, it couldn’t be simpler. All you need to do is keep playing and performing better than the algorithm predicts you will.

Due to the differences in the actual match results submitted by both players it is possible that Player 2 may have a higher ITF World Tennis Number than Player 1 and demonstrates how the ITF World Tennis Number is based on quality as opposed to quantity of match results in order to move along the scale.

Beating your predicted performance

The ITF World Tennis Number pre-match prediction is not as straightforward as win or loss as the algorithm will predict the percentage chance of certain outcomes and change player’s numbers in relation to that.

This means that regardless of the level of two players competing against each other (whether they have a lower ITF World Tennis Number than each other or not), if a player performs better than the algorithm predicts they will then their ITF World Tennis Number may go up.

Competition changes update

Bringing in the ITF World Tennis Number isn’t the only way we’re improving how we run competitions

To make our competitions better, we have…

  • Introduced a simpler system, based around the calendar year, for competition age groups.
  • Helped players find and enter competitions – which we’ll continue to adapt based on your feedback. 
  • Introduced a new LTA National League team competition for tennis venues in the winter season involving 2,500 teams.
  • Brought in new categories of competitions for junior players, including LTA Youth Matchplay alongside such events as the LTA Youth Team Challenge and the LTA Youth Local Tour.

 

LTA Rankings

An LTA ranking is a measure of where you stand within your county, region and nationwide and represent an overall order of merit.

Competition grades

Want to find out which of our competition grades is most suitable for you? Check out our handy guide.