Guides / Tennis 101

Three numbers, one player.

Tonight, enter your athlete's current WTN or UTR in TierBreak once, on the Season tab, and then do not open it again for a month. Two of the three numbers in this guide are ratings, which estimate level from match scores; the third is a ranking, which counts wins in sanctioned events. They answer different questions, they run in opposite directions, and none of them has to agree with another. Read the trend over months, against your own athlete's past, and never a single Wednesday against someone else's kid.

Two ratings and a ranking are not the same thing

WTN: the federation's number

The ITF World Tennis Number runs from 40 to 1; lower is stronger, and singles and doubles are separate numbers that are never blended. The algorithm predicts the score from both players' pre-match numbers, then moves each number by how the actual score compared, set by set and, since the August 2026 update, with the game score inside each set: a 6-4 set now moves the number less than a 6-0 set. It uses a rolling three-year window with recent results weighing more. It is published every Wednesday around 3 a.m. Eastern. The blue or grey check mark is a confidence level; fewer recent matches means a less certain number that swings further on each result.

WTN is free, USTA adopted it across the country in 2022, and it is the exclusive rating written into the regulations for USTA junior, ITA college, and ITF competition. Junior NTRP is gone from Junior Team Tennis.

UTR: the market's number

UTR runs from 1.00 to 16.50, higher is stronger, one scale for every age and gender. A UTR is a weighted average of up to 30 match ratings from the last 12 months; each match rating comes from the rating gap between the players and the percentage of games won against what that gap predicted. Longer formats, opponents with reliable ratings, and recent dates carry more weight. It updates daily, UTR says roughly five or six matches make it reliable, and because it is a rolling average a big result shows up with a slight lag.

The Verified UTR (blue check) counts only results from verified providers: sanctioned tournaments, official high-school matches, college matches, and verified leagues. Casual and self-posted matches count only toward the unverified number. UTR's own claim is that the verified number is what college coaches look at.

USTA rankings: points for wins, not a measure of level

The USTA system is a ladder of seven tournament levels, Level 7 up to Level 1 (the full ladder is in USTA tournament levels explained), and points are earned only by winning rounds; a bye does not count, a walkover counts as a win but earns no bonus, and a default for a code violation forfeits every point from that tournament. Bonus points come from singles wins over players on the top-500 list.

The formula: 100% of singles points from the six highest-point singles tournaments, plus 15% from the six highest-point doubles tournaments. Points earned in an older division count in full toward a younger division's standing once a ranking event has been played there; 20% of points earned in a younger division count upward. There are two lists with two answers: the National Standings List (rolling 12 months, published Wednesdays), which tournaments select from, and the year-end ranking (calendar year, 200-point minimum).

Which events feed which number

• Any tournament or league match recorded on a USTA platform feeds WTN, whether or not WTN was used to seed it. Level 1 to 7 wins also feed USTA points. Green-ball results count for WTN once every player in the match is at least 9.
• High-school conference or state events run through USTA count toward WTN; official high-school matches, sanctioned tournaments, college matches, and verified leagues count toward the Verified UTR.
• The edge cases parents ask about: a default does not touch WTN; a walkover still earns USTA round points but no bonus; an unfinished match counts toward WTN with whatever score exists, and the system is built so that stopping early does not protect a rating.

How often each number moves

UTR daily. WTN on Wednesdays. USTA standings on Wednesdays, with results usually posting the Wednesday after the event. The practical rhythm: check the player record after each tournament, because USTA asks families to review it and submit corrections, then look at the numbers monthly, not nightly. A rating can change in a week your athlete did not play: WTN re-rates when opponents' historic matches are added, a WTN idle for more than a year may drift gradually, and UTR drops results older than 12 months.

What coaches and colleges actually look at

In college tennis, the ITA named WTN the exclusive official rating in January 2023, and every college player has one because the ITA shares results with the ITF. UTR says its verified number is what coaches look at; in practice many programs watch both. Tournament directors and sections use WTN and the standings lists to seed, select, and flight junior events, with each section setting its own method for Level 3 Closed through Level 7, and ITF junior tournaments use WTN as a second acceptance criterion.

A peer-reviewed study of 1,532 matches at the 2022 USTA Junior National Championships found UTR predicted results 73.9% of the time and WTN 70.4%, a difference that was not statistically significant. The two numbers measure the same thing. And the timeline matters: NCAA Division I tennis coaches cannot send recruiting materials or make calls before June 15 after sophomore year. A number at 11, 12, or 13 is a development tool, not a recruiting fact.

Why a young player's number moves, and why a win can lower it

Both ratings score performance against expectation. Win 7-5, 7-6 when the model projected 6-1, 6-1 and the number can dip; lose 4-6, 6-4, 6-7 to a much stronger player and it can rise. Confidence matters: a player with fewer matches swings further on each result, WTN confidence slips after about two months idle and is highest at 30 or more matches a year. That is how the number behaves, not a prescription for a child's match load. WTN also includes a small adjustment for natural development in juniors, and both systems reweight as other players' histories fill in, so a 13-year-old's number is a moving estimate by design. Read the trend over three to six months.

Reading the numbers as a parent

Treat all three as lagging indicators: they report what happened in matches weeks ago, not what was built in practice this week. The work is the leading indicator; the Weekly Review is where it shows. Decide, as a family, how much of the ratings world your athlete sees and when. Younger or newer competitors rarely benefit from watching a number that moves every Wednesday, and the parents' guide has the words for the car when a number goes the wrong way.

Where TierBreak fits

Your family enters the athlete's WTN and UTR yourselves, singles and doubles, and each entry becomes a point on the Season tab's ratings trajectory. The days won and the tracked-match evidence those services never see live on the daily and weekly screens, where no rating appears. A parent can hide the ratings screen from the athlete's login entirely or show one system only, and that control is never gated. TierBreak does not fetch or scrape a rating from anywhere, and USTA standings are not tracked today; official data arrives only through a consented provider, later. That is the family-owned record. Experienced players covers the ratings entry and the college bands in detail.

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Next: Experienced players: ratings and the long view →