What's your number?

Tennis is now more fun, more personalized, and more engaging with the ITF World Tennis number. 


Developed by the International Tennis Federation, the world governing body of tennis, the ITF World Tennis number is one of the most advanced and accurate rating systems in the world. It’s free to use for all ages and genders and is being adopted by the USTA and in over 135 countries.


If you've played with the USTA within the last 5+ years, either singles or doubles, you have an ITF World Tennis Number. Click here to find your profile.

What makes it great

It's a free 40-1 scale which makes assessing your play and seeing your progression more fun and rewarding.

Players get one ITF WTN for singles and one for doubles. Beginners start at 40 and pro players will be closer to 1.

A personalized tool, GameZone, helps you identify players of similar skill level.

You can search an online community to find players wherever you are.

A wide range of player statistics help you track and improve your game.

It’s a tool for college coaches to use to evaluate prospective student-athletes worldwide.

General Competition Level Description

World Tennis Number

Competition Level Description


Adult and junior players who are novice level competitors


Adult and junior players who are intermediate level competitors


Adult and junior players who are advanced level competitors


Adult and junior (tournament and league) players who are the top level competitors


Professional players

What about NTRP?

The USTA NTRP is not planned to go away, and remains the key rating used to power a number of offerings, including the USTA League program. USTA NTRP is a static rating, released once a year, which is useful for a season-long competition. The ITF World Tennis Number is a rating that allows you to track your progress in real time week after week, and encompasses all reported competitive play results – USTA League, non-USTA leagues, tournaments and other recorded events.


For more information about the relationship between USTA NTRP and the ITF World Tennis Number, download our handy guide below!

Track your number, see your progress

Any play event that is recorded on usta.com or Tennislink feeds your number and the USTA is working to expand play opportunities. Millions of player match results across the U.S. and the world are updated weekly for near real time accuracy.


On worldtennisnumber.com, you’ll be able to search for other players, explore their play history, create head-to-head comparisons and see their win/loss ratios.

“The ITF WTN is an innovative tool that I believe may revolutionize tournament play, by arranging more level based match ups. We love that the USTA is using new technology and ideas to create better events for our tennis community.”


-Ari Zuckerman, USTA Eastern Section ITF World Tennis Number Pilot Provider

Upcoming ITF World Tennis Number Webinars

Register and learn what you need to know about the ITF World Tennis Number and get many of your questions answered.

Frequently Asked Questions

To access our full list of FAQs, visit customer care click here.

  • The ITF World Tennis Number provides a global standard for players. It is a 40-1 scale, with 40 being a beginner player and 1 being an elite professional. This scale is for all players, regardless of age, gender, or ability. Players will have a separate ITF World Tennis Numbers for singles and doubles.

  • The ITF World Tennis Number was developed by the International Tennis Federation (ITF). The ITF is the international governing body of tennis that works with national associations worldwide to support the growth of the sport.

  • Participation in USTA and ITF events will result in an ITF World Tennis Number rating. Players need match results in order to generate an initial rating. Initial ITF World Tennis Number ratings may be at a lower “Confidence Factor” until more match results are recorded.

  • The USTA has no current plans to replace NTRP. The NTRP rating system will continue to serve as the foundation of the USTA Adult League program.

  • There is no direct one-to-one comparison between NTRP and WTN due to many differences in each rating system. For instance:
    • WTN and NTRP operate using two, distinct algorithms.
    • The match results that make up a player’s Computer Rated (C) NTRP rating and WTN will not always be the same.
    • WTN has a separate singles and doubles rating, while NTRP takes singles and doubles results into account for a single rating.
    • NTRP and WTN handle mixed doubles matches differently.
    • WTN ratings are calculated and published once per week, whereas NTRP is published once per year.
  • The ITF World Tennis Number algorithm uses match result data as provided by the United States Tennis Association (USTA) to calculate your ITF World Tennis Number. Results provided by the USTA from as far back as 2016 can be used in calculating your rating. The more data used, the more accurate the rating. Pre-match ratings of both players are used by the algorithm to project the outcome of the match. Your ITF World Tennis Number changes depending on your match score and how it compares to the projection. Current results carry more weight than older results. Over time, a result carries less and less weight in your rating calculation. Match results are analyzed at set level; the algorithm takes into account each individual set as its own result.

  • Here are a few ways the United States plans to use the ITF World Tennis Number in the near future:

    • Ratings-based events   

    • Selection and seeding in USTA Junior Tournaments

    • ITF acceptance

  • Player Development: Statistics to track your progress and help improve your game

  • Future seeding, selection and flighting by ITF World Tennis Number in USTA Tournaments and level-based tournaments

  • ITF World Tennis Number will be used in ITF tournament selection

  • GameZone: Easily identify players at your level for closer matches, more fun and more improvement

  • Track favorite players, friends, professionals, local competition, and team comparisons

  • International system: Players from all over the world will be using the ITF World Tennis Number

  • Match wins make up your USTA ranking. Ranking points are awarded by either points per round or points per win, depending on the tournament level. Match scores make up your WTN rating. Match scores are analyzed at set level. The algorithm takes into account each individual set as its own result.

Are you a tournament director or provider interested in using the ITF World Tennis Number?