Tennis ratings help answer a practical question: who is likely to produce a competitive, enjoyable match? The confusion begins when three useful systems are treated as though they are the same.
World Tennis Number
WTN is a global 40-to-1 scale, moving from beginning players toward elite professionals. Singles and doubles receive separate numbers. That separation is important because a player’s doubles positioning, return choices and net skills may be stronger than their singles results. Explore the official system at World Tennis Number.
UTR
UTR uses a 1.00-to-16.50 scale and is especially familiar to competitive juniors, college players, tournament players and serious adults. It is useful for finding practice partners and events where score competitiveness matters. Players can browse official events through the UTR event search.
NTRP
NTRP remains the everyday language of U.S. adult leagues: 3.0, 3.5, 4.0 and so on. It is valuable because clubs, captains and local groups already organize around it. It should not be discarded merely because newer global systems exist.
Why Tennis Playmate does not publish an exact conversion
The systems use different data, algorithms, timing and treatment of singles and doubles. A “WTN 22 equals UTR 6.4” promise would look convenient but create false precision. Tennis Playmate’s Rating Lab instead compares two players inside every system they share, adds a confidence label and produces a Match Compatibility estimate.
Every profile should also show whether a number is officially verified, player-entered, coach-verified or estimated. The source and last-updated date are as useful as the number itself.
A rating is a starting point for a match—not a verdict on a player.