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 free to use for all ages and genders and has been adopted by the USTA and in over 170 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.

What about NTRP?

The USTA NTRP 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

Participation in USTA and ITF tournaments, leagues, and match play events will result in an ITF World Tennis Number rating. 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.

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 tournaments, leagues, and match play will result in an ITF World Tennis Number rating. Players need match results in order to generate an initial rating. Players can expect their initial ITF World Tennis Number ratings to be at a lower “Confidence level” until more match results are recorded.

  • 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 WTN algorithm uses match result data as provided by the United States Tennis Association (USTA) to calculate your ITF WTN. 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 WTN 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.

  • WTN Tournaments and Match Play
  • Selection and seeding in USTA Junior and Adult Tournaments
  • ITF acceptance
  • Collegiate Tennis
  • Junior Team Tennis
  • Player Development: Statistics to track your progress and help improve your game
  • Seeding, selection and flighting by ITF WTN in USTA, ITA and ITF-Tournaments

  • 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 WTN

  • 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 results, analyzed at the set level, make up your WTN rating. 

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