7. World Tennis Number (WTN)

World Tennis Number (WTN)

The World Tennis Number, or WTN, is another rating system rather than an independent organization. It was developed by the International Tennis Federation, which changed its public name to World Tennis in June 2026. World Tennis is the global governing body for tennis and works with national tennis associations worldwide.

WTN was launched to provide a common international measurement of playing ability.

The scale runs from approximately 40 for beginning players toward 1 for the strongest professional players. This direction can initially confuse American players because lower numbers represent higher playing levels.

A player’s WTN is calculated from match results and updated regularly. It is intended to help players find appropriate opponents, track development, and enter level-based competition across different countries and tennis systems.

World Tennis works with national associations to collect results and expand the use of the rating. This approach is important because tennis results have historically been separated among national federations, age groups, tournament systems, and countries.

A broadly adopted international rating can help connect these different competitive environments. WTN may also be considered for acceptance or entry into certain World Tennis competitions when a player does not have another applicable professional ranking.

RSM students should understand that WTN, UTR, and NTRP are not interchangeable. NTRP is closely connected to USTA adult league competition in the United States. UTR is operated by a private technology and events company and uses a 1.00–16.50 scale.

The sport’s international governing body operates WTN and uses a scale moving from 40 toward 1. A club may encounter all three systems, depending on whether it serves recreational adults, juniors, college players, international players, or high-performance competitors.

What RSM students should know…

The existence of multiple rating systems can create confusion, but each serves different business and competitive purposes. A knowledgeable racquet sports professional should be able to explain the basic differences to players and parents without claiming that one number perfectly defines a player.