Level-Matching Algorithms: How NTRP, DUPR and UTR Work

Balance on court decides the quality of a match more than anything else. When two players with mismatched levels meet, the experienced one gets an unsatisfying win and the beginner loses motivation. That is why most opponent-finding apps turn a player's skill into a number and suggest opponents by it. Behind that number there are usually three scales: NTRP and UTR in tennis, DUPR in pickleball.

NTRP (National Tennis Rating Program) is the scale developed by the United States Tennis Association (USTA). It ranks players from 1.5 (beginner) to 7.0 (world-class professional) in steps of 0.5. Official NTRP levels are published once a year from league results; during the season, a dynamic value that moves with results is calculated in the background. A player shown as 3.5 may actually sit at 3.42 or 3.68 underneath.

DUPR (Dynamic Universal Pickleball Rating) is a pickleball rating that ranges from 2.000 to 8.000. It ignores age and gender and looks only at match results. Rather than who won, it measures how close the score came to what was expected, and it keeps separate ratings for singles and doubles. Results from verified matches such as tournaments count as more reliable data than casual games.

UTR (Universal Tennis Rating) rates tennis players from 1.00 to 16.50. It looks at up to 30 matches from the last 12 months and is based on the percentage of games won, not just on wins. Singles and doubles ratings are separate, which lets it compare club players and professionals on one scale.

Most systems work in four steps. First, a new player's level is estimated: with no match history, a short questionnaire or an existing official rating is used, and the rating moves faster in the first matches. Then, before each match, an expected result is calculated; the Elo system, borrowed from chess, derives the probability of winning from the rating gap. After the match, the real score is compared with that expectation: in a closer-than-expected match the stronger player can lose points, and the player seen as weaker can gain points even in defeat. Finally, the system tracks how reliable the rating is; the rating deviation in the Glicko model trusts the rating of a player who has not played for a long time less, and allows bigger changes in the first matches back.

Apps do not use level on its own; they combine it with location and time. If there is no suitable opponent nearby, the search range widens a little, and the distance a player is willing to travel is taken into account. In doubles the aim is to keep the two teams' combined levels close: a 4.5 and 3.5 pair is, on paper, balanced against a 4.0 and 4.0 pair.

Some players set their level lower than it is to win easy matches. Dynamic systems counter this with statistics: a player who keeps beating opponents at their own level by crushing scores sees their rating raised quickly. Having both sides confirm the score also makes one-sided or made-up results harder to enter.

Set your level honestly; if in doubt, start one step lower, because overrating yourself means heavy defeats in a row. Play regularly and record your results; systems work better with fresh data. Instead of always playing the same group, meet different opponents. Your singles and doubles performance can differ, so judge them separately.

On Racket Crush you set your own level for each sport with a short questionnaire when you sign up; your level shows on your profile, and when looking for opponents everyone sees each other's level. You can update your level from your profile at any time. After a match one side enters the score and the other confirms it or rejects it with a reason; confirmed matches stay in your history. Racket Crush is free and covers tennis, padel, badminton, squash and pickleball.