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Tennis Rating Systems Explained: NTRP, UTR and the World Tennis Number

How a tennis rating differs from a ranking, and how the USTA's NTRP, the UTR Rating and the ITF's World Tennis Number each measure playing level.

By Published 6 min read

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Key takeaways

  • A ranking adds up points for results at eligible events; a rating estimates how well you play by comparing your results with what was expected.
  • NTRP runs from 1.5 to 7.0 in half-point steps, UTR from 1.00 to 16.50, and the World Tennis Number from 40 down to 1, so on WTN a lower number is better.
  • UTR and WTN both reward beating expectations, so a narrow win over a weaker opponent can lower a rating while a close loss to a stronger one can raise it.
  • Use the system your league, club or event uses, and do not convert numbers between scales without that system's own guidance.
  • Give any rating a few matches against similar opponents before trusting it: UTR marks an early rating as projected, the WTN shows a lower confidence level for a thin record, and the USTA says an NTRP level is established after a few matches.

A tennis ranking and a tennis rating answer different questions. A ranking adds up points earned for results at eligible tournaments and puts players in order. It is what the ATP, for example, uses to decide entry and seeding. A rating estimates how well someone plays right now, by comparing their match results with what was expected. This guide compares three rating systems. The USTA's NTRP runs from 1.5 to 7.0. The UTR Rating from UTR Sports runs from 1.00 to 16.50. The ITF's World Tennis Number (WTN) runs from 40 down to 1, so on that scale a lower number is better.

Each is described here from its owner's own published material, checked on 2 October 2026. None of them is better in the abstract; they are built for different jobs, and the useful question is which one your league, club or event uses.

Rankings and ratings are different tools

The professional ranking is the clearest example of the first kind. The 2026 ATP rulebook calls its rankings "the objective merit-based method" for deciding entry and seeding. The ranking period is the past 52 weeks, and the total comes from a player's results at the biggest events plus a set number of best results elsewhere. The rulebook's points tables award points by the round reached, and they drop off after 52 weeks. How tennis ranking points work goes through the details.

A rating ignores how far you went in an event. It asks whether you did better or worse than your rating predicted against the opponents you actually faced. That leads to the effect that confuses players most: a win can lower a rating and a loss can raise one. The WTN's FAQ gives an example. If the algorithm gave you a 90% chance of winning and you won only in three sets, you did not meet its projection. A ranking would simply have given you the points for the round.

The three systems side by side

NTRP UTR Rating World Tennis Number
Run by United States Tennis Association UTR Sports International Tennis Federation
Scale 1.5 (beginner) to 7.0 (touring pro), in 0.5 steps 1.00 to 16.50 40 (beginner) to 1 (elite pro), shown with decimals in some regions
Better is Higher Higher Lower
Main inputs USTA adult league play; some sections add sanctioned tournaments and other leagues Match scores, from games won against expectation Match results since 2016, analysed set by set with game scores
Recalculated Changes slowly over time Daily Weekly, every Wednesday
Singles and doubles Not covered on the USTA's explainer page Similar algorithms; doubles compares team averages Separate numbers, separate algorithms
Certainty signal Established "after only a few matches" Projected after one match; a separate Verified rating from vetted events Confidence level, with a verified checkmark

NTRP: the USTA's level descriptor

The NTRP is built around skill descriptions. The USTA defines it as a numerical indicator of ability from 1.5 to 7.0, with each half-point level tied to a set of general characteristics. Its own examples sketch the range. A 1.5 is still working on getting the ball into play. A 3.0 is fairly consistent on medium-paced shots but lacks control of direction, depth and pace. A 6.0 typically has intensive training, international or top college competition and a national ranking behind them. The 6.5 and 7.0 levels are world-class players.

Ratings are generated from play in USTA adult divisions: 18 & Over, 40 & Over, 55 & Over, 65 & Over, and mixed 18, 40 and 55 & Over. In some USTA sections, results from sanctioned tournaments and other leagues are included too. Players can also self-rate. The USTA describes ratings that are established after only a few matches and then "slowly increase or decrease over time." Its explainer describes how the rating behaves, not the formula behind it.

Best suited to: adult league and team play in the USTA system, where the level bands decide who you are grouped with.

UTR Rating: a game-by-game average

The Universal Tennis Rating puts all players on one 1.00 to 16.50 scale, "regardless of age, gender, geography or skill level," in UTR Sports' words. The company describes it as a modified Elo system. Its published method has five parts:

  • Each match gives every player a match rating and a match weight. Your UTR Rating is the weighted average of up to 30 of your most recent match ratings, from the last 12 months only.
  • The key input is the percentage of games won compared with what the rating gap predicted. A close match against a much stronger player can lift your rating. A narrow win over a much weaker one can lower it.
  • Matches are excluded when the higher-rated player wins and the gap is more than 2.00, and when neither player won at least four games before a withdrawal or retirement. Walkovers and defaults are not used.
  • Ratings recalculate daily, so they can move without you playing, as opponents' ratings change or old results age out.
  • One match gives a projected rating, shown as (P), and a few more make it reliable. A separate Verified UTR Rating counts only results from vetted third-party events. College coaches and tournament providers use it for recruiting, entry and line-ups.

Best suited to: players who compete across ages, genders and countries and want one continuous number, especially juniors heading toward college tennis.

World Tennis Number: the ITF's global scale

The WTN is the ITF's attempt at a single global standard. Its FAQ sets out the main features:

  • The scale runs from 40, a beginner, to 1, an elite professional, for all players regardless of age, gender or ability. Each player has separate singles and doubles numbers, calculated by separate algorithms.
  • The algorithm uses match results from 2016 onwards. It predicts each match from both players' ratings, then moves the numbers according to how the actual result compares. Results are analysed set by set, with the game score factored in.
  • Numbers update weekly, every Wednesday.
  • A confidence level comes from the rating deviation in the Glicko-2 method. A player with a thin record will see their number move more. The FAQ gives an example of reaching a verified number: 15 completed sets within five weeks against opponents in your "Game zONe".
  • The Game zONe is the band of opponents against whom your chance of winning sits between 35% and 65%, the most competitive matches available. A singles player whose WTN is 10 or above, numerically, has one; the strongest players, with numbers below 10, do not, and neither do doubles numbers.

Best suited to: players who want one scale that runs from beginner to professional across countries, which is how the ITF presents the WTN.

Reading the numbers without getting misled

Three habits keep ratings useful:

  1. Mind the direction. A UTR of 6 and a WTN of 6 mean very different things. One is low on its scale and the other is near the top. A "better" WTN is a smaller number.
  2. Don't convert. The scales differ in range, direction and the matches they draw on, so a conversion chart is at best an estimate. Use the number your event asks for.
  3. Expect noise from a thin record. UTR marks a rating as projected until a few more matches make it reliable, the WTN's confidence level is lower for a player with little history, and the USTA describes an NTRP level as established after a few matches. A rating built on two matches says little.

Ratings are also not rankings in disguise. Entry to professional events runs on rankings: the ATP's rulebook names its rankings as the method for entry and seeding. From the junior circuit to the pro tour explains how juniors cross over.

Why a career game uses a ranking

Rankings make better stories than ratings, because they decay and have to be defended. Tennis Career Simulator 2026 is built that way. Your fictional player starts in junior events, then works through qualifiers and draws to earn ranking points, which expire over a rolling window. Choosing which events to play becomes part of the game, and ranking decay and scheduling covers that design. The game is not affiliated with any real player, tour, tournament or governing body.

If the scoring itself is still new, tennis scoring for beginners is the place to start. The tennis hub collects the rest, and the studio's other games are under sports career and GM games.

Good to know

Frequently asked questions

What is the difference between a tennis rating and a ranking?
A ranking totals points earned for results at eligible tournaments over a set period, and is used for entry and seeding: the ATP's rankings, for example, cover the past 52 weeks. A rating estimates current playing level from match results compared with what was expected. A ranking rewards going deep in events; a rating rewards performing above your predicted level.
What do NTRP levels mean?
The USTA's NTRP rates ability from 1.5, a beginner still learning to get the ball into play, to 7.0, a touring professional, in half-point steps. The USTA describes a 3.0 as fairly consistent on medium-paced shots without full control of direction, depth or pace. Ratings come mainly from USTA adult league play, and players can also self-rate.
How is a UTR Rating calculated?
According to UTR Sports, each match produces a match rating and a match weight, and a player's UTR Rating is a weighted average of up to 30 of their most recent match ratings from the last 12 months. What matters is the percentage of games won against what the rating difference predicted. Ratings recalculate daily on a 1.00 to 16.50 scale.
Is a lower World Tennis Number better?
Yes. The ITF's World Tennis Number runs from 40 for a beginner to 1 for an elite professional, with separate numbers for singles and doubles. It updates weekly and compares set results and game scores with a pre-match prediction, so beating the prediction moves your number toward 1.
Can I convert a UTR to an NTRP or a World Tennis Number?
Not reliably. The three systems use different scales, different directions and different match data, so the same player can sit in different relative positions on each. Use the rating your league, club or tournament asks for, and treat any unofficial conversion chart as a rough guide only.

Sources

  1. Understanding NTRP Ratings (opens in a new tab)United States Tennis Association (USTA) — accessed
  2. How UTR Rating Works (opens in a new tab)UTR Sports — accessed
  3. Frequently Asked Questions (opens in a new tab)World Tennis Number (International Tennis Federation) — accessed
  4. Discover World Tennis Number (opens in a new tab)World Tennis Number (International Tennis Federation) — accessed
  5. The 2026 ATP Official Rulebook (opens in a new tab)ATP Tour — accessed

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