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WTN Information for Adult Players

Updated

The International Tennis Federation (ITF) World Tennis Number is a new, single global tennis rating for all players, regardless of age, ability or gender. The USTA, along with over 135 other international governing bodies to-date, have adopted the ITF World Tennis Number. 

Review the information below to learn about the relationship between WTN and adult players.

1. WTN Usage in USTA Adult Play

2. WTN Relation to other Ratings/Rankings for Adults

For a general overview of the WTN rating system and technical information, please click here.

 

1. WTN Usage in USTA Adult Play.

What is the relationship between USTA League and WTN?

Although WTN is not being used for USTA League play, all USTA league match results are included in the calculation of a player’s World Tennis Number.  Adult League players will be able to track changes in their WTN week to week.

 

Can I file a Self-Rate NTRP Grievance based on my WTN?

No, self-rate NTRP grievances do not take into account a player's WTN.

 

2. WTN Relation to other Ratings/Rankings for Adults.

Will the ITF World Tennis Number replace NTRP and are there any plans to use WTN in USTA League?

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.

 

What are the main differences between NTRP and WTN?

There is no direct one-to-one comparison between NTRP and WTN due to many differences in each rating system.  For instance:

  1. WTN and NTRP operate using two, distinct algorithms.
  2. The match results that make up a player’s Computer Rated (C) NTRP rating and WTN will not always be the same.
  3. WTN has a separate singles and doubles rating, while NTRP takes singles and doubles results into account for a single rating.
  4. NTRP and WTN handle mixed doubles matches differently.
  5. WTN ratings are calculated and published once per week, whereas NTRP is published once per year.

 

How does WTN rating differ from a USTA Ranking?

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.

 

How does the WTN differ from UTR?

There are a few differences between UTR and the ITF World Tennis Number:

WTN is an ITF product which is supported by the USTA and over 135 member nations providing results from their national associations.

ITF World Tennis Number will be used for acceptance criteria in certain ITF events.

  • Rating Scales:
    • WTN:
      • 40 point scale, one decimal place
        • 40 (Beginner) to 1 (Top Professionals)
      • 400 potential rating increments
        • 40 point scale X 10 decimal points
    • UTR:
      • 16 point scale, two decimal places
        • 1 (Beginner) to 16 (Top Professionals)
      • 1600 potential rating increments
        • 16 point scale X 100 decimal points
  • Update Frequency – WTN is updated weekly. UTR is updated daily.

 

Why are UTR Event results not included?

If UTR chooses to provide UTR Event results to the ITF then those results will be included.

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